1. Microstructural changes in coal during low temperature ashing;Allan;Fuel,1986
2. Method D2797-Standard Method of Preparing Coal samples for Microscopical Analysis by Reflected Light;American Society for Testing and Materials (ASTM);Annual Book of ASTM Standards. Part 26. Gaseous Fuels, Coal and Coke,1978
3. Method D3172-Standard Method for Proximate Analysis of Coal;American Society for Testing and Materials (ASTM);Annual Book of ASTM Standards. Part 26. Gaseous Fuels, Coals and Coke,1978
4. The organic petrology and geochemistry of lignite from the Paleocene Ravenscrag Formation, southern Saskatchewan;Beaton,1990
5. Geochemistry and petrography of lignites from southern Saskatchewan;Beaton;J. Coal Qual.,1989