1. Amestica, L. A., and Wolf, E. E., 1986, Catalytic liquefaction of coal with supercritical water/CO/solvent media, Fuel
65:1226.
2. Appell, H. R., Fu, Y. C., Friedman, S., Yavorsky, P. M., and Wender, I., 1971, Converting Organic Wastes to Oil: A Replenishable Energy Source, U.S. Department of the Interior, Bureau of Mines Rept. Invest. 7560.
3. Appell, H. R., Fu, Y. C., Illig, E. G., Steffgen, F. W., and Miller, R. D., 1975, Conversion of Cellulosic Wastes to Oil, U.S. Department of the Interior, Bureau of Mines Rept. Invest. 8013.
4. ASME, 1979, ASME Steam Tables—Thermodynamic and Transport Properties of Steam, American Society of Mechanical Engineers, New York.
5. Berl, E., and Schmidt, A., 1932, Über die Entstehung der Kohlen, II. Die Inkohlung von Cellulose and Lignin in neutralem Medium, Ann. Chemie
493:97.