1. Anal lesions of Crohn's disease;Lockhart-Mummery;Clin Gastroenterol,1972
2. Perianal Crohn's disease;Alexander-Williams,1976
3. Surgery of the anus, rectum and colon;Goligher,1975
4. The management of villous tumours of the large bowel;Parks;Br J Surg,1973
5. The internal anal sphincter and the anorectal abscess;Eisenhammer;Surg Gynecol Obstet,1956