1. Charles, D.: Endometriosis and hemorrhagic pleural effusion. Obstet. Gynecol.10: 309, 1957.
2. Collins, D. C.: Endometriosis of the vermiform appendix: Review of literature, with addition of nine new instances, one of which caused severe melena. Arch. Surg. (Chicago).63: 617, 1951.
3. Czernobilsky, B., B. B. Silverman, and J. J. Mikuta: Endometrioid carcinoma of the ovary: A clinicopathologic study of 75 cases. Cancer.25: 1141, 1970.
4. Elliott, G. B., R. M. Christensen, and K. A. Elliott. Invasive endometriosis of the intestine: Report of 21 cases. Can. J. Surg.13: 387, 1970.
5. Field, C. A., E. A. Banner, and R. E. Symmonds: Endometriosis of abdominal scar after cesarean section. Mayo Clin. Proc.37: 12, 1962.