1. Cornbleet, Th.: Arch. Derm. Syph. (Chicago)41, 193 (1940).
2. Longhi, A.: Arch. ital. Derm.25, 97 (1952).
3. Mihara, J.: Jap. J. Derm.67, 381 (1957).
4. Monacelli, M.: Relazione XXVIII. Congr. SIDES, 1933.
5. Monacelli, M., u.A. Ribuffo: Hautarzt1952, 498.