Gevorkyan, T. G., and I. A. Feinstein. “Elimination of Pain Syndrome in Patients With Advanced Pancreatic Head Cancer”. Herald of Pancreatic Club 42, no. 1 (February 19, 2019): 46-52. Accessed June 24, 2026. https://vkp.org.ua/index.php/journal/article/view/146.