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@article{DE_1973_9_5_a13, author = {E. I. Moiseev}, title = {Essential and nonessential boundary sets for the {Neumann} problem}, journal = {Differencialʹnye uravneni\^a}, pages = {901--911}, publisher = {mathdoc}, volume = {9}, number = {5}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1973_9_5_a13/} }
E. I. Moiseev. Essential and nonessential boundary sets for the Neumann problem. Differencialʹnye uravneniâ, Tome 9 (1973) no. 5, pp. 901-911. http://geodesic.mathdoc.fr/item/DE_1973_9_5_a13/