1. Zeitschr. angew. Chemie 1922,35, 105, 187, 289.
2. Bull. Soc. Chim. de France 1922,31, 414; vergl. auch Toyama, Journ. Soc. Chem. Ind. Japan 1922,25, 1044.
3. Journ. Indian Inst of Science 1926,9a, II, 25–70.
4. Journ. Soc. Chem. Ind. 1927,46, 457.
5. Ber. Deutsch. Chem. Ges. 1886,19, 3320; 1887,20, 2385.