1. Activity and Selectivity of hydrotreating catalysts;Ahuja;Ind. Eng. Chem. Prod. Res. Dev.,1970
2. Bertolacini, R. J. and L. C. Gutberlet, “Catalyst for hydrocarbon conversion processes”, U.S. Patent 3, 622, 501 (1971).
3. Role of catalytic metals in hydro-cracking;Beuther;Ind. Eng. Chem. Process Des. Dev.,1965
4. Boorman, P. M., J. F. Kriz, J. R. Brown and M. Ternan, “Hydrocracking bitumen derived from oil sands with sulphided MoO3, - CoO catalysts having supports of varying composition”, Chem. Uses. Molyb., Proc. Int. Conf. 4 th, 192-196 (1982).