1. A. F. Bashkirov, Chronic Obstruction of the Common Bile Duct and Its Operative Treatment. Dissertation, St. Petersburg (1909).
2. e. I. Gal'perin et al., Khirurgiya, No. 6, 10 (1980).
3. E. I. Troyan, Eksp. Khir., No. 4 48 (1952).
4. A. A. Shalimov et al. Klin. Khir., No. 10, 61 (1981).
5. C. Artandi, Surg. Gynec. Obstet.,150 235 (1980).