1. Organic geochemical characteristics and depositional environment of the Tertiary Tanjong Formation coals in the Pinangah area, onshore Sabah, Malaysia;Alias;Int. J. Coal Geol.,2012
2. Standard classification of coals by rank. Philadelphia;ASTM D388–12,2012
3. Standard Practice for Ultimate Analysis of Coal and Coke;ASTM (American Society for Testing and Materials) D3176,1989
4. Screening techniques for source rock evaluation;Bordenave,1993
5. Petroleum source rock potential of coal and associated sediments: qualitative and quantitative aspects;Boreham,1993