TsvetkovE. L. (1995) “On regularity of generalized solutions of the third boundary-value problem for an elliptic difference-differential equation”, Ukrains’kyi Matematychnyi Zhurnal, 47(1), pp. 93–104. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/5386 (Accessed: 24November2024).