1. 1) Proc. 8 (1932), 500.
2. 2) Journal of the Pharm. Soc. of Japan, 52 (1932), 1009.
3. 3) Journal of the Pharm. Soc. of Japan, 53 (1933), 921.
4. 4) Gazz. chim. Ital. 57 (1927), 462.
5. 1) W. Mosimann, u. J. Tambor: B. 49 (1916), 1261; Czaplicki, Kostanecki u. Lampe: B. 42 (1909), 827.