В. К. Дзядык, А. Н. Колмогоров, Л. Д. Кудрявцев, С. Л. Соболев, “Сергей Михайлович Никольский (к восьмидесятилетию со дня рождения)”, УМН, 40:5(245) (1985), 269–278 ; V. K. Dzyadyk, A. N. Kolmogorov, L. D. Kudryavtsev, S. L. Sobolev, “Sergei Mikhailovich Nikol'skii (on his eightieth birthday)”, Russian Math. Surveys, 40:5 (1985), 251–263
Shankov V.V., “Coercive Properties of an Elliptic Equation with Degeneracy”, Doklady Akademii Nauk Sssr, 281:6 (1985), 1320–1322
Roitberg J.A., Sheftel Z.G., “General Boundary–Value–Problems for Elliptic in the Sense of Douglis–Nirenberg Systems with Strong Degeneration”, Doklady Akademii Nauk Sssr, 276:6 (1984), 1324–1327
Kudryavtsev L.D., “A Variational Method of Finding Generalized Solutions of Differential–Equations in Function–Spaces with Power Weight–Functions”, Differential Equations, 19:10 (1983), 1282–1296
Baideldinov B.L., “An Analog of the 1st Boundary–Value Problem for a 2M–Order Elliptic Equation with Exponential Degeneration on the Boundary”, Doklady Akademii Nauk Sssr, 270:5 (1983), 1038–1042