1. Symposium sur les dermatoses professionelles-Suppi. to Arch;Bory, R.; Lecocq, J.; Negri, R.;Mal. prof,1955
2. Englis, D. T., and Fiess, H. A. (1944). Indusir. Engng Chem., 36,604.
3. Pletscher, A., Schuppli, R., and Reipert, R. (1954). Z. Unfallmed. Berufskr., 47, 163.
4. Pluss, J. (1954). Ibid., 47, 83.
5. Occupational Diseases of the Skin;Schwartz, L.; Tulipan, L.; Peck, S.M.,1947