Prof. Dr. Wan Hasiah Abdullah

 

Publication

 

Refereed Academic/Professional Journals

 

  1. Wan Hasiah Abdullah, Murchison, D., Jones, J.M., Telnaes, N. and Gjelberg, J., 1988. “Lower Carboniferous coal depositional environments on Spitsbergen ”, Organic Geochemistry, Vol 13, Nos 4-6, 1988, pg. 953-964. Pergamon Press plc.

 

  1. Wan Hasiah Abdullah, “An organic petrological and organic geochemical study of North Sea Middle Jurassic Brent coals and coaly sediments”, Bulletin Geological Society of Malaysia, Vol. 32, November 1992, pg. 155-164

 

  1. Wan Hasiah Abdullah, “Evidence of early generation of liquid hydrocarbon from suberinite as visible under the microscope”, Organic Geochemistry, Vol. 27, No. 7/8, November/December 1997, pg. 591-596. Pergamon , U.K.

 

  1. Wan Hasiah Abdullah, “Common liptinitic constituents of Tertiary coals from the Bintulu and Merit-Pila coalfield, Sarawak and their relation to oil generation from coal”, Bulletin Geological Society of Malaysia, Vol. 41, December 1997, pg. 85-94.

 

  1. Wan Hasiah Abdullah and Peter Abolins, “Organic petrological and organic geochemical characterisation of the Tertiary coal-bearing sequence of Batu Arang, Selangor, Malaysia”, Journal of Asian Earth Sciences, Vol. 16, No. 4, August 1998, pg. 351-367. Pergamon , U.K.

 

  1. Wan Hasiah Abdullah, 1999. “Oil-generating potential of Tertiary coals and other organic-rich sediments of the Nyalau Formation, onshore Sarawak ”, Journal of Asian Earth Sciences, vol. 17, 1999, pg.255-267, Pergamon , U.K.

 

  1. Wan Hasiah Abdullah, 1999. “Organic facies variations in the Triassic shallow marine and deep marine shales of central Spitsbergen , Svalbard ”, Journal of Marine and Petroleum Geology, vol. 16, 1999, pg. 467-481, Elsevier , U.K.

 

  1. Wan Hasiah Abdullah, 1999. “Petrographic features of oil-prone from the Brunei-Muara District, Negara Brunei Darussalam”, GEOSEA ’98, Ninth Regional Congress on Geology, Mineral and Energy Resources of Southeast Asia, August 17-19, 1998, Kuala Lumpur, Bulletin Geological Society of Malaysia  Special Publication No. 43, December 1999, pg, 621-627.

 

  1. Wust, R.A.J., Bustin, M., Lee Chai Peng and Wan Hasiah Abdullah, 1999. “Holocene peat accumulation in a tropical intermontane mire system, Tasik Bera, West Malaysia: implication for coal formation”, GEOSEA ’98, Ninth Regional Congress on Geology, Mineral and Energy Resources of Southeast Asia, August 17-19, 1998, Kuala Lumpur, Bulletin Geological Society of Malaysia  Special Publication No. 43, December 1999, pg. 229-249.

 

  1. Wan Hasiah Abdullah. “A petrographic comparison of oil-generating coals from the tropics and non oil-generating coals from the arctic”. Geological Society of Malaysia , Conference Issue June 2-3 2001 , Pangkor Island , Perak, pg. 33-38.

 

  1. Wan Hasiah Abdullah (2002) Organic petrological characteristics of limnic and paralic coals of Sarawak . In Bulletin of the Geological Society of Malaysia , No. 45, May 2002, 65-69.

 

  1. Amer Mohamed Ibrahim and Wan Hasiah Abdullah, 2002. “An assessment of palaeodepositional environment and thermal maturity of Upper Palaeozoic sediments of Peninsular Malaysia by organic geochemical and petrological methods” Malaysian Journal of Science, 21: 93-105.

 

  1. Khalid Ali Alshebani, Wan Hasiah Abdullah and Abdul Hadi Abd. Rahman, 2003. “Biomarker characterization and thermal maturity evaluation of Ganduman Formation, Sahabat area, Dent Peninsula , Sabah , Malaysia ” In Bulletin of the Geological Society of Malaysia, No. 46, May 24-26, 461 -466.

 

  1. Alsharef Albaghdady, Wan Hasiah Abdullah and Lee Chai Peng, 2003. “An organic geochemical study of the Miocene sedimentary sequence of Labuan Island, offshore western Sabah, East Malaysia” In Bulletin of the Geological Society of Malaysia, No. 46, May 24-26, 455-460.

 

  1. Wan Hasiah Abdullah, 2003. “Coaly source rocks of NW Borneo: role of suberinite and bituminite in oil generation and expulsion” In Bulletin of the Geological Society of Malaysia, No. 47, December 2003, 153-163.

 

  1. Tarek Abubaker, Wan Hasiah Abdullah and Abdul Hadi Abd. Rahman, 2004 “Biomarkers as palaeoenvironment and thermal maturity indicators of the Sandakan Formation (Late Miocene) East Sabah, Malaysia” In Malaysian Journal of Science, 23(2), 165-174.

 

  1. Mohd Azlan Mohd Ishak, Khudzir Ismail, Mohd Fauzi Abdullah, Mohd Omar Abdul Kadir, Abdul Rahman Mohamed, Wan Hasiah Abdullah, 2005. “Liquefaction studies of low-rank coal using high-pressure high-temperature batch-wise reactor” In A Multinational Journal Coal Preparation, 25 (4) Oct-Dec 2005, 221-237, Taylor & Francis LLC.

 

  1. J.K. Raj, Ismail Yusuff & Wan Hasiah Abdullah, “Past And Present-Day Coastal Changes Between Kuala Sungai Besar And Kuala Besar, Kelantan Darul Naim”, In Bulletin of the Geological Society of Malaysia, No. 53, June 2007, pp15-20.

 

 

Other Journals

 

  1. Wan Hasiah Abdullah, “Oil-generating potential of coals from Spitsbergen , Svalbard ”, Warta Geologi, Vol. 16, No. 6, Nov-Dec 1990, Abstract, pg. 273.

 

  1. Wan Hasiah Abdullah, “Depositional palaeoenvironment characterization – An organic geochemical approach (a case study from Spitsbergen )”, Warta Geologi, Vol. 21, No.1, Jan-Feb 1995, Abstract, pg. 17.

 

  1. Wan Hasiah Abdullah, Mohamad Jamaal Hoesni and Peter Abolins “Aspects of oil generation from coals: A Sarawak case study. The importance of exsudatinite and variations in organic facies characteristics” Warta Geologi, Vol.21, No. 6, Nov-Dec 1995, Abstract, pg. 403.

 

  1. Wan Hasiah Abdullah, “Coal as a source rock for oil: Petrographic evidence from Tertiary coals, onshore Sarawak ” Warta Geologi, Vol. 22, No.6, Nov-Dec 1996, Abstract, pg. 445.

 

  1. Wan Hasiah Abdullah, “Depositional palaeoenvironment determination based on organic facies characterization – A case study of the Batu Arang coal-bearing sequence”, Warta Geologi, Vol. 23, No.3, May-Jun 1997, Abstract, pg. 169.

 

  1. Wan Hasiah Abdullah, 2002. “Oil staining in the onshore Togopi Formation, Dent Peninsula , NE Sabah Basin” Warta Geologi, 28 (4), 153-156.

 

  1. Wan Hasiah Abdullah and Lee Chai Peng, 2002. “Hydrocarbon-bearing fissure in the limestone of the Togopi Formation, Dent Peninsula , Sabah ” Warta Geologi, 28 (5), 193-196.

 

  1. Alsharef Albaghdady, Wan Hasiah Abdullah and Lee Chai Peng, 2003 “An organic geochemical study of the Miocene sedimentary sequence of Labuan Island , offshore western Sabah , East Malaysia ” Warta Geologi, 29 (3), Abstract, 156-157.

 

  1. Khalid Ali Alshebani, Wan Hasiah Abdullah and Abdul Hadi Abd. Rahman, 2003 “Biomarker characterisation and thermal maturity evaluation of Ganduman Formation, Sahabat area, Dent Peninsula , Sabah , Malaysia ” Warta Geologi, 29 (3), Abstract, p157.

 

  1. Contribution to an article on “Gas Asli”, In Dewan Kosmik Majalah Sains Dan Teknologi, September 2002, pg. 16-18, DBP.

 

  1. Azlina Anuar, Peter Abolins, Paul Crevello and Wan Hasiah Abdullah, 2003. “A geochemical evaluation of the West Crocker Formation – clues to deepwater source rock facies?” Warta Geologi, 29 (6), Abstract, 267-268.

 

  1. Ismail Elforjani Shushan, Wan Hasiah Abdullah and Abdul Hadi Abdul Rahman, 2003. “Comparison of source rock geochemistry of selected organic-rich rocks from the new airport site and Tg. Kidurong, Bintulu” Warta Geologi, 29 (6), Abstract, 313-314.

 

  1. Tarek Abu Bakar, Abdul Hadi Abd. Rahman and Wan Hasiah Abdullah, 2003. “The Late Miocene Sandakan Formation, East Sabah : facies, depositional environments and relative sea level changes” Warta Geologi, 29 (6), Abstract, 314-315.

 

  1. J.K. Raj, Ismail Yusuff & Wan Hasiah Abdullah, “Past And Present-Day Coastal Changes Between Kuala Sungai Besar And Kuala Besar, Kelantan Darul Naim”, 2006 In Warta Geologi, Vol. 32, No 3, May-June 2006.

 

  1. Wan Hasiah Abdullah, “Keynote Paper: History & Development of Geoscience Education in Malaysian Universities: A UM perspective”,2006, In Warta Geologi, Vol. 32, No 3, May-June 2006.

 

Proceedings of Conference/Seminar/Workshop

 

  1. Peter Abolins, S.S. Wooding and Wan Hasiah Abdullah “Detailed Geochemical Evaluation of selected coals and carbonaceous shales from the Batu Arang Quarry – Implications for oil generation from coals in Malaysia hydrocarbon producing basins”, Workshop on Advances in Petroleum Geochemistry in Malaysia and Southeast Asia, Ming Court Hotel, Kuala Lumpur, 27th July 1991. Abstract.

 

  1. Wan Hasiah Abdullah, “Application of HPLC in the field of Petroleum Geochemistry”, Bengkel Penggunaan dan Pengendalian H.P.L.C., Persatuan Penolong Pegawai Sains Universiti Malaya dan Fakulti Sains, Jabatan Genetik & Biologi Sel, Fakulti Sains, UM, 1st November 1996. Abstract.

 

  1. Wan Hasiah Abdullah, “Oil-generating potential of Tertiary coals and organic-rich sediments of the Nyalau Formation, onshore Sarawak”, An International Workshop on Tectonics, Stratigraphy & Petroleum Systems of Borneo, Universiti Brunei Darussalam, Negara Brunei Darussalam, 22-25 June 1997. Abstract, pg. 39.

 

  1. Ouzani Bachir and Wan Hasiah Abdullah, “Generation and expulsion of liquid hydrocarbons from Sarawak coals: correlation between petrographic features and physical properties”, GEOSEA ’98 Ninth Regional Congress on Geology, Mineral and Energy Resources of Southeast Asia, Shangri-La Hotel, Kuala Lumpur, 17-19 August 1998. Abstract, pg. 134.

 

  1. Wan Hasiah Abdullah, “Petroleum generating potential of selected sediments from the Belait Fomation of the Brunei-Muara District, Negara Brunei Darussalam”, GEOSEA ’98 Ninth Regional Congress on Geology, Mineral and Energy Resources of Southeast Asia, Shangri-La Hotel, Kuala Lumpur, 17-19 August 1998. Abstract, pg. 213.

 

  1. Wust, R.A.J., Bustin M., Lee Chai Peng and Wan Hasiah Abdullah, “Holocene peat accumulation in a tropical intermontane mire system, Tasik Bera, West Malaysia: implication for coal formation”, GEOSEA ’98 Ninth Regional Congress on Geology, Mineral and Energy Resources of Southeast Asia, Shangri-La Hotel, Kuala Lumpur, 17-19 August 1998. Abstract, pg. 111-112.

 

  1. Amer Mohamed Ibrahim, Wan Hasiah Abdullah and Azhar Hj. Hussin “Organic geochemistry of selected Upper Palaeozoic Kuantan Group sediments of East Pahang, Eastern Belt, Peninsular Malaysia”. Geological Society of Malaysia Annual Geological Conference 1999, 29-30 May, Kota Tinggi, Johor, 27-28, 1999.

 

  1. Ouzani Bachir, Wan Hasiah Abdullah and Azhar Hj. Hussin “Lithofacies sorting of organic matter and its implications for source rock potential”. Geol. Soc. Malaysia Petroleum Geology Conference’1999, Shangri-La Hotel, Kuala Lumpur , 23-24 Nov. 1999.

 

  1. Amer Mohamed Ibrahim, Wan Hasiah Abdullah and Azhar Hj. Hussin “Biomarker distribution of the Upper Palaeozoic sediments from East Pahang , Peninsular Malaysia”. Geol. Soc. Malaysia Petroleum Geology Conference’1999, Shangri-La Hotel, Kuala Lumpur , 23-24 Nov. 1999.

 

  1. Wan Hasiah Abdullah and Nur Sharliza Mohd Rapi’ain “Petrography and organic geochemistry of Tertiary coals from Mukah-Balingian, Sarawak ”. Geol. Soc. Malaysia Petroleum Geology Conference’1999, Shangri-La Hotel, Kuala Lumpur , 23-24 Nov. 1999.

 

  1. Wan Hasiah Abdullah. “Oil from coals of Northwest Borneo : Generation potential and expulsion pathways”. In Proceedings of Southeast Asian Coal Geology Conference, Bandung , Indonesia 19-20 June 2000, pg. 108-112.

 

  1. Cook, A.C. and Wan H. Abdullah. “Petrology and chemistry of some coals from the Tanjung Formation, South Kalimantan ”. In  Program and Abstracts of the Southeast Asian Coal Geology Conference, Bandung, Indonesia 19-20 June 2000, pg 7.

 

  1. Wan Hasiah Abdullah, Wan Nafiza Wan Jaafar & Rosni Lokmannul Hakim. “Oil-generating potential of the Tanjung Formation coals of South Kalimantan, Indonesia”. In Programme & Abstract of Papers, Petroleum Geology Conference 2000, 22-23 November, Shangri-La Hotel, Kuala Lumpur, pg. 91.

 

  1. Ouzani Bachir & Wan Hasiah Abdullah. “Relationship between biomarker distributions, maceral assemblages and lithofacies in the coal-bearing sequence of Bintulu, Sarawak ”. In Programme & Abstract of Papers, Petroleum Geology Conference 2000, 22-23 November, Shangri-La Hotel, Kuala Lumpur, pg. 58.

 

  1. Wan Hasiah Abdullah. “A petrographic comparison of oil-generating coals from the tropics and non oil-generating coals from the arctic”. Geological Society of Malaysia Annual Geological Conference 2001, June 2-3 2001 , Pangkor Island , Perak, pg. 33-38.

 

  1. Wan Hasiah Abdullah. “Suberinite-bituminite and phlobaphinite-inertinite associations in the oil-generating coals of Northwest Borneo ”. In Abstracts of the TSOP/ICCP session, The 53rd meeting of the International committee for coal and organic Petrology, Copenhagen , Denmark , August 12-19 2001 , pg.146-151.

 

  1. Wan Hasiah Abdullah and Ouzani Bachir. “Petrographic insights into liquid hydrocarbon generation and expulsion from oil-generating coals of Sarawak , Malaysia ”. In Abstracts of the TSOP/ICCP session, The 53rd meeting of the International committee for coal and organic Petrology, Copenhagen , Denmark , August 12-19 2001 , pg.21-28.

 

  1. Wan Hasiah Abdullah. “Suberinite: Oil-prone maceral of Borneo coals”. Programme & Abstract of Papers, Petroleum Geology Conference & Exhibition 2001, 19-20 September 2001, Mutiara Hotel, Kuala Lumpur, Malaysia, pg. 115.

 

  1. Wan Hasiah Abdullah. “Influence of vitrinite types, facies associations and hydrocarbon generation on vitirinite reflectance analysis”.  In Programme & Abstract of Papers, Petroleum Geology Conference & Exhibition 2001, 19-20 September 2001, Mutiara Hotel, Kuala Lumpur, Malaysia, pg. 118.

 

  1. Ouzani Bachir and Wan Hasiah Abdullah. “Petroleum system of the Balingian Province , Sarawak Basin ”. In Programme & Abstract of Papers, Petroleum Geology Conference & Exhibition 2001, 19-20 September 2001, Mutiara Hotel, Kuala Lumpur, Malaysia, pg. 33.

 

  1. Peter Abolins, Azlina Anuar, Wan Hasiah Abdullah and Abdul Jalil Muhamad, “An overview of source rock deposition in Northwest Borneo ”. Regional Geology of NW Borneo Workshop, 4-5 March 2002, Bandar Seri Begawan , Brunei Darussalam.

 

  1. Hodairi, T.A., Abdul Hadi, A.R. and Wan Hasiah Abdullah, A., 2002. “Facies organisation and depositional environments of some selected outcrops of Sandakan Formation (Upper Miocene), Sandakan, Sabah”, In Programme & Abstracts of papers, Petroleum Geology Conference & Exhibition 2002, 15-16 October 2002, Kuala Lumpur, Malaysia, 81-83.

 

  1. Ismail Elforjani Shushan, Abdul Hadi Abdul Rahman and Wan Hasiah Abdullah, 2002. “Facies organisation and deposotional environments of coal-bearing successions within the Nyalau (Oligocene-Late Miocene) in Bintulu area (Tinjar Province), Sarawak”  In Programme & Abstracts of papers, Petroleum Geology Conference & Exhibition 2002, 15-16 October 2002, Kuala Lumpur, Malaysia, 30-32.

 

  1. Wan Hasiah Abdullah and Peter Abolins, 2002. “Vitrinite reflectance analysis: minimising the errors” In Programme & Abstracts of papers, Petroleum Geology Conference & Exhibition 2002, 15-16 October 2002, Kuala Lumpur, Malaysia, 69-70.

 

  1. Alsharef Albaghdaday, Wan Hasiah Abdullah and Lee Chai Peng, 2003 “Organic geochemical evaluation of the Miocene sedimentary sequence of Labuan Island , offshore Sabah , Malaysis” Seminar Penyelidikan Jangka Pendek (Vot F), 11-12 Mac 2003, UM.

 

  1. Tarek, A.O. and Wan Hasiah Abdullah, 2003 “Biomarkers as maturity and palaeoenvironmental indicators of the Upper Miocene Sandakan Formation, Sabah ”, Seminar Penyelidikan Jangka Pendek (Vot F), 11-12 Mac 2003, UM.

 

  1. Wan Hasiah Abdullah, 2003. “Oil-generation and expulsion features of NW Borneo coals” Seminar Penyelidikan Jangka Pendek (Vot F), 11-12 Mac 2003, UM.

 

  1. Wan Hasiah Abdullah, Lee Chai Peng and Ismail Yusof, 2003. “From peat accumulation to coal formation to oil generation” EXPO S&T 2003 An Exhibition on Science & Technology (hosted by Ministry of Science, Technology and the environment), 7-9 August 2003, Kuala Lumpur.

 

  1. Wan Hasiah Abdullah, Lee Chai Peng and Ismail Yusof, 2003. “From peat accumulation to coal formation to oil generation” IPTA Research & Development Exposition 2003, 9-12 October, PWTC, Kuala Lumpur .

 

  1. Azlina Anuar, Peter Abolins, Paul Crevello and Wan Hasiah Abdullah, 2003. “A geochemical evaluation of the West Crocker Formation – clues to deepwater source rock facies?” In Petroleum Geology Conference & Exhibition, 17-18 December, Kuala Lumpur , Malaysia , 39-40.

 

  1. Ismail Elforjani Shushan, Wan Hasiah Abdullah and Abdul Hadi Abdul Rahman, 2003. “Comparison of source rock geochemistry of selected organic-rich rocks from the New Airport Site and Tg. Kidurong, Bintulu, Sarawak: implication for oil generation from terrestrial-derived organic matter” In Petroleum Geology Conference & Exhibition, 17-18 December, Kuala Lumpur, Malaysia, 172-175.

 

  1. Tarek Abu Bakar, Abdul Hadi Abd. Rahman and Wan Hasiah Abdullah, 2003. “The Late Miocene Sandakan Formation, East Sabah : facies, depositional environments and relative sea level change” In Petroleum Geology Conference & Exhibition, 17-18 December, Kuala Lumpur , Malaysia , 176-179.

 

  1. Raj. J.K., Ismail Yusoff and Wan Hasiah Abdullah, 2004. “Sequential aerial photographs in modelling coastal changes” Regional conference on ecological and environmental modelling (ECOMOD 2004), 15-16 Sept., Universiti Sains Malaysia , Pulau Pinang.

 

  1. Mohd Azlan Mohd Ishak, Khudzir Ismail, Mohd Fauzi Abdullah, Mohd Omar Abdul Kadir, Abdul Rahman Mohamed and Wan Hasiah Abdullah, 2004. “Liquefaction studies of low-rank Malaysian coal using high-pressure high-temperature batch-wise reactor system” Twenty-First Annual International Pittsburgh Coal Conference, September 13-17, Osaka, Japan.

 

  1. Wan Hasiah Abdullah, 2004. “Oil-prone mangrove-derived coaly constituents of NW Borneo” The Society for Organic Petrology 21st Annual Meeting, September 26-October 1, Sydney , Australia .

 

  1. Wan Hasiah Abdullah, 2004. “Maceral and textural association in the oil-generating coals of Sarawak” The Society for Organic Petrology 21st Annual Meeting, September 26-October 1, Sydney, Australia.

 

  1. Patrick Gou and Wan Hasiah Abdullah, 2004. “Integrating Sedimentology, Biostratigraphy, Organic Petrology and Petroleum Geochemistry: A case study of the Neogene sequences of Limbang, Sarawak ”. Petroleum Geology Conference & Exhibition 2004, 15-16 December 2004, Istana Hotel, Kuala Lumpur , Malaysia , pp44-48.

 

  1. Chai Shin Ni and Wan Hasiah Abdullah, 2004 “Coal depositional settings of Mukah-Balingian, Sarawak : Implications for coaly petroleum source rocks of the Balingian Province ”. Petroleum Geology Conference & Exhibition 2004, 15-16 December 2004, Istana Hotel, Kuala Lumpur , Malaysia , pp94-95.

 

  1. Ismail Elforjani Shushan, Wan Hasiah Abdullah and Abdul Hadi Abdul Rahman, 2005 “Organic geochemical and petrological studies of selected organic-rich sediments from Bintulu area, Sarawak, Malaysia”. University of Malaya Graduate Events 2005, 11-12 May 2005, p83.

 

  1. Wan Hasiah Abdullah “Petrographic features of oil-generating coals, Malaysian Tertiary basins”. Ekspo Penyelidikan, rekacipta & inovasi UM 2005, 14-17 June 2005.

 

  1. Wan Hasiah Abdullah “Early generated hydrocarbons: origin and significance for coaly source rocks” In Petroleum Geology Conference & Exhibitions 2005, 6-7 December, Kuala Lumpur, pg.144-145.

 

  1. Wan Hasiah Abdullah, Vladimir Kiselev, Shamsul Nizam Ariffin “A Comparison of Liquefaction yields of Malaysian Low Rank Coals from Batu Arang and Mukah Balingian” Ekspo Penyelidikan Rekacipta Inovasi DTC, UM, 18-20 Julai 2006.

 

  1. Wan Hasiah Abdullah, “Plenary Paper: Meeting Petroleum Exploration Challenges: Contributions of Geoscientists”, 2006, In Malaysian Science and Technology Congress 2006 (MSTC 2006) 18-20 September 2006, Putra World Trade Centre, Kuala Lumpur.

 

  1. Wan Hasiah Abdullah, Peter Abolins, “Oil-Prone Paralic Coals: A Case Study from the Balingian Province of Sarawak, Malaysia”,2006, In Abstracts Volume 16 AAPG International Conference And Exhibition November 5-8, 2006 Perth, Australia, pg1.

 

  1. Wan Hasiah Abdullah, Peter Abolins, “Source Rock Potential of Lower Coastal Plain Coals and Coaly Sediments of Northwest Borneo”, 2006,   In Abstracts Volume 16 AAPG International Conference And Exhibition November 5-8, 2006 Perth, Australia, pg1.

 

  1. Shushan, Ismail Elforjani, Abdul Hadi Abd. Rahman, Wan Hasiah Abdullah, “Facies, Depositional Systems and Sequence Stratigraphy of the Middle Miocene Nyalau Formation, Sarawak, Malaysia”, 2006, In Abstracts Volume 16 AAPG International Conference And Exhibition November 5-8, 2006 Perth, Australia, pg126.

 

  1. Wan Hasiah Abdullah, Vladimir Kiselev, Shamsul Nizam Ariffin, “Source rock potential of paralic coals versus fresh water coals” Ekspo Penyelidikan Rekacipta Inovasi DTC, UM, 26-28 Julai 2007.