1. Cesarean Section—A Brief History;Sewell,1993
2. Della Amputazione Utero-ovarica;Porro;Milan,1876
3. The role of Frontier America in the development of cesarean section;Eastman;Am J Obstet Gynecol,1932
4. Suprasymphysial delivery and its relation to other operations in the presence of contracted pelvis;Frank;Arch Gynaekol,1907
5. Ueber den extraperitonealen Kaiserschnitt;Latzko;Zentralbl Gynaekol,1989