1. Gangrenous perforation of the gall bladder;DIFFENBOUGH, W.G.; SARVER, F.E.; STROHL, E.L.;Archives of Surgery,1949
2. Perforation of the gall bladder;FRILEY, M.;Review ofSurgery,1972
3. Spontaneous perforation of gall bladder due to acute non-calculous ulcerative cholecystitis;GONSALVES, H.J.B.;Journal of the Royal College of Surgeons of Edinburgh,1979
4. Acute free perforation of the gall bladder;NEIMEIER, O.W.;Archives of Surgery,1934
5. Abdominal Operations;MAINGOT, R.,1974