1. Onychomycosis;Achten,1981
2. The nails in psoriatic arthritis;Baker;Br. J. Dermatol,1964
3. Skin Signs of Systemic Disease. Edition 2;Braverman,1981
4. Urea ointment in nonsurgical avulsion of nail dystrophies;Farber;Cuti,1978
5. Topically applied fluorouracil in the treatment of psoriatic nails;Fredriksson;Arch. Dermato,1974