1. Natural and artificial diagenesis of coal macerals;Allan,1975
2. A geochemical study of the exinite group maceral alginite, selected from three Permo-Carboniferous torbanites;Allan,1980
3. Kerogen characterisation by 13C NMR spectroscopy and pyrolysis-mass spectrometry;Barwise,1984
4. Hydrocarbons of marine phytoplankton;Blumer;Marine Biology; Intl. J. on Life in Oceans and Coastal Waters,1971
5. Thermal maturation by vitrinite reflectance of Woodford Shale, Anadarko Basin, Oklahoma;Cardott;Bull. Amer. Assoc. Petrol. Geol.,1985