1. Uber subunguale tumorem.;Eisenklam;Wien. Klin. Wochenschr.,1931
2. Primary carcinoma of the nail.;Levine;Arch. Surg.,1939
3. Primary carcinoma of the nail-bed.;Ashby;Br. J. Surg.,1956--1957
4. Primary carcinoma of the nail bed.;Nelson;Arch. Dermatol.,1970
5. Subungual basal cell epithelioma.;Alpert;Arch. Dermatol.,1972