1. Safety in laparoscopy;Palmer;J Reprod Med,1974
2. Open laparoscopy;Fitzgibbons,1991
3. Direct insertion of the laparoscopic trocar after an earlier laparotomy;Kaali;J Reprod Med,1988
4. Incidence of bowel injury due to dense adhesions at the site of direct trocar insertion;Kaali;J Reprod Med,1992