1. Die erste cholecystecktomie durch das laparoskop;Mühe;Langenbecks Arch Surg,1986
2. History of laparoscopy;Kaiser;Surg Oncol Clin N Am,2001
3. Laparoscopic versus open cholecystectomy for patients with symptomatic cholecystolithiasis;Keus;Cochrane Database Syst Rev,2006
4. One port laparoscopic cholecystectomy in selected patients;Paganini,1995