1. The grading of carcinoma;Broders;Minn Med,1925
2. Squamous cell carcinoma of the anus, anal canal and rectum in 109 patients;Richards;Surg Gynecol Obstet,1962
3. Epidermoid carcinoma of the anus and rectum;Brinkley;Am J Surg,1950
4. Epidermoid carcinoma of thè anus;Brennan;Ann Surg,1972
5. An analysis of forty-nine cases of squamous cell carcinoma of the anus;Grinnell;Surg Gynecol Obstet,1954