1. Genitalumwandlung an zwei maennlichen Transvestiten;Abraham;Z. Sexualwiss. IS,1931
2. Transvestism: hormonal, psychiatric, and surgical treatment;Hamburger;J.A.M.A.,1953
3. Sex reassignment;Money;Int. J. Psychiatry,1971
4. The transsexual's request for surgery;Knorr;J. Nerv. Ment. Dis.,1968
5. The current status of the change of sex operation;Pauly;J. Nerv. Ment. Dis.,1968