1. Cornification of glans penis;Van der Velde;J Mich State Med Soc,1936
2. Case of horn of the glans penis;Jewett;NY Med Times,1854
3. Penile horn: verruca vulgaris;Sugiura;Urology,1979
4. Cutaneous horns;Bart;Acta Derm Venereol,1968
5. Cutaneous horns;Lennox;J Pathol Bacteriol,1964