M. Hadi YAŞA, et al. “Palliavite Tratment of Extrahepatic Malign Obstruction With Plastic and Metalic Stents: A Comparsion”. Turkish Journal of Gastroenterology, vol. 7, no. 3, July 2019, pp. 211-6, https://tjg.avesjournals.com/index.php/tjg/article/view/1151.