Rahman, A., and L. Gwatidzo. “A Green Protocol for Selective Oxidation of Alcohols to Carbonyl Compounds Comparative Studies With Various Ni Heterogeneous Catalysts With O2 and H2O2 As Oxidants”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 24, no. 4, Oct. 2015, pp. 196-0, https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/4566.