1. A study of 50,000 specimens of the human vermiform appendix;Collins;Surgical Gynecological Obstetrics,1955
2. Duplicated vermiform appendix;Kjossev;British Journal of Surgery,1996
3. Appendix vermiformis duplex;Cave;Journal of Anatomy,1936
4. Double appendix;Wallbridge;British Journal of Surgery,1963
5. Horseshoe anomaly of the appendix: a previously undescribed entity;Mesko;Surgery,1989