[3] FAN Tianguang, Buckley J S. Energy&Fuels, 2002, (16)6: 1571.
[4] Islas-Flores C A, Buenrostro-Gonzalez E, Lira-Galeana C. Energy & Fuels, 2005, (19)5: 2080.
[8] Aske N, Kallevik H, Sjblom J. Energy & Fuels, 2001, 15(5): 1304.
[9] Yuan Hongfu, Chu Xiaoli, Li Haoran, et al. Fuel, 2006, 85(12-13): 1720.