1. De morbus artificum diatriba;Ramazzini,1940
2. Occupational asthma;Seaton,1975
3. L'asme bronchiale allergica come malattia professionale;Introna;Minerva Med,1966
4. Occupational asthma due to inhalation of pharmacological dusts and other chemical agents with some reference to other occupational asthmas in Japan;Kobayashi,1974
5. Public Health Service NIOSH;United States Department of Health, Education, and Welfare,1973