1. Local excision of rectal carcinoma;Graham;Am J Surg,1990
2. Die erweiterte Lymphknotendissektion beim Magen- und colorektalen Karzinom;Gall;Chirurg,1988
3. Surgical access to the rectum—a transsphincteric exposure;Mason,1970
4. Transsphincteric surgery of the rectum;Mason;Prog Surg,1974
5. Transsphincteric surgery for lower rectal cancer;Mason,1980