1. 1) Urbach & Reiss, Arch. f. Derm., Bd. 126, S. 713, 1931.
2. 2) Urbach & Wolfram619, 1933.
3. 3) Lanford, Ref. Zbl. f. Haut-Geschl.-krh. Bd. 26, S.803, 1928.
4. 4) T. Taniguchi e. al., Jap. Journ. of experim. Med., V. X, p.581, 1932.
5. 5) T. Taniguchi e. al., Jap. Journ. of experim. Med., V. X, p.599, 1932.