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@article{DE_1971_7_4_a11, author = {S. A. Laptev}, title = {Closure in the metric of the generalized {Dirichlet} integral}, journal = {Differencialʹnye uravneni\^a}, pages = {727--736}, publisher = {mathdoc}, volume = {7}, number = {4}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1971_7_4_a11/} }
S. A. Laptev. Closure in the metric of the generalized Dirichlet integral. Differencialʹnye uravneniâ, Tome 7 (1971) no. 4, pp. 727-736. http://geodesic.mathdoc.fr/item/DE_1971_7_4_a11/