Tantau, M., T. Pop, R. Badea, Z. Spirchez, O. Moşteanu, and A. Tantau. “Intraductal Ultrasonography for the Assessment of Preoperative Biliary and Pancreatic Strictures”. Journal of Gastrointestinal and Liver Diseases, vol. 17, no. 2, June 2008, pp. 217-22, https://jgld.ro/jgld/index.php/jgld/article/view/2008.2.15.