1. Zur coelioskopie;Kelling;Arch Klin Chir,1923
2. Die direkte Beleuchtung der Bauchhole, der Harnblase, des Dickdarms und des Uterus zu diagnostichen Zwecken;Ott;Rev Med Tcheque (Prague),1909
3. Peritoneoscopy surgery;Ruddock;Gynecol Obstet,1937
4. The evaluation of a new peritoneoscope as a diagnostic aid to the surgeon;Berci;Ann Surg,1973
5. Value of laparoscopy in hepatobiliary disease;Cuschieri;Br J Surg,1974