1. Chemical desulphurization of coal;Morrison,1981
2. An overview of coal cleaning technology;Wheelock,1981
3. Sulfur in coal and reactions in sulfur compounds related to coal desulfurization;Cheng Tsai,1982
4. X-ray absorption spectroscopic investigation of sulfur sites in coal: organic sulfur identification;Spiro;Science,1984
5. Microbial removal of organic sulfur from coal (bacterial degradation of sulfur-containing heterocyclic compounds);Klubek,1987