Alan N. Barkun, Jeffrey S. Barkun, Gerald M. Fried, Gabriella Ghitulescu, Oren Steinmetz, Christine Pham, Jonathan L. Meakins, Carl A. Goresky,
Useful Predictors of Bile Duct Stones in Patients Undergoing Laparoscopic Cholecystectomy Annals of Surgery. ,vol. 220, pp. 32- 39 ,(1994) ,
10.1097/00000658-199407000-00006