1. Appell, H. R., Fu, Y. C., Illig, E. G., Steffgen, F. W., and Miller, R. D., Conversion of Cellulosic Wastes to Oil, Bureau of Mines Report of Investigation 8013 (1975).
2. Appell, H. R., Wender, I. and Miller, R. D., Conversion of Urban Refuse to Oil, Bureau of Mines Technical Progress Report - 25 (May 1970).
3. Appell, H. R., Fu, Y. C., Friedman, S., Yavorsky, P. M., and Wender, I., Bureau of Mines Technical Report of Investigation 7560 (1971).
4. Conversion of Solid Waste to Liquid Fuel
5. Catalytic Hydrogenation and Hydrocracking of Oxygenated Compounds to Liquid and Gaseous Fuels