Kurbanshoev S. Z. (1992) “Construction and analytical properties of integral varieties of solutions of a system of nonlinear difference equations”, Ukrains’kyi Matematychnyi Zhurnal, 44(5), pp. 630-636. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/7958 (Accessed: 24November2024).