1. Recognition and Measurement of Coal Oxidation;Benedict,1964
2. Pseudovitrinite in Appalachian coking coals;Benedict;Fuel,1968
3. Measuring surface properties and oxidation of coal macerals using the atomic force microscope;Bruening;International Journal of Coal Geology,2005
4. Non-matrix corrected organic sulfur determination by energy dispersive X-ray spectroscopy for western Kentucky coals and residues;Clark;Scanning Electron Microscopy,1984
5. A study of microhardness impressions of coal;Das;Transactions of the Institute for Mining and Metallurgy – Mining and Geology Series,1971