1. A new concept of the anatomy of the anal sphincter mechanism and the physiology of defaecation. III. The longitudinal anal muscle. Anatomy and role in anal sphincter mechanism;Shafik;Invest Urol,1976
2. V. The rectal neck: Anatomy and function;Shafik;Chir Gastroenterol,1977
3. II. Anatomy of levator ani muscle with special reference to puborectalis;Shafik;Invest Urol,1975
4. IX. Single loop continence. A new theory of the mechanism of anal continence;Shafik;Dis Col Rec,1980
5. XVIL Mechanism of defaecation;Shafik;Coloproctology,1982