1. G. Agrup, (1968 ) Hand Dermatitis, a Prospective Study ,Proc. XIII Intern. Cong. Derm., 1967. Munchen, p.273 .
2. G. AgrupHand Dermatitis, a Prospective Study. To be published.
3. R. Baer, and V. Witten, (1958 ) Year Book of Dermatology and Syphilogy 1957-1958 . Chicago The Year Book Publishers, p.7 .
4. Die Epicutantestung
5. P. Bonnevie, (1939 ) Actiologise und Pathogenese der Ekezemkrankheiten . Copenhagen: Busck. p.77 , 77 .