Dmitry V. Ruchkin, Valentin A. Kozlov, Maria N. Yan, Alexey A. Nitkin, Pavel I. Nazaryev, Oleg A. Rymar. “ The Revision Surgery of the Digestive Tract After Failed Prior Gastric Reconstruction”. International Journal of Advanced Science and Technology, Vol. 29, no. 9s, May 2020, pp. 1231 -39, http://sersc.org/journals/index.php/IJAST/article/view/13536.