1. Laparoscopic nephrectomy;Clayman;J Urol,1991
2. Laparoscopic mini-laparotomy with manipulation;Boland;Min Invas Ther,1993
3. Laparoscopic radical nephrectomy with intra-abdominal manipulation;Tierney;Min Invas Ther,1994
4. Laparoscopic tumor nephrectomy—the German experiences;Tschada;J Urol,1995
5. Laparoscopic colon surgery—a difficult operation made easy;Leahy;Surg Endosc,1994