REFERENCES
- Alexander and Tompkins . 1939 . Trans. Far. Soc. , xxxv : 1156 Alexander and Tompkins, J. South African Chem. Inst., 1940, xxiii (2), p. 1
- Mann and Tompkins . 1941 . Trans. Far. Soc. , xxxvii : 201
- Hinshelwood . 1919 . Trans. Chem. Soc. 1180
- Moelwyn-Hughes and Musgrave . 1933 . Trans. Far. Soc. , xxix : 1162
- Hill and Tompkins . 1942 . Trans. Roy. Soc. S. Afr. , xxix : 309