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@article{DE_1991_27_6_a9, author = {N. N. Petrov}, title = {Control problems and separability axioms}, journal = {Differencialʹnye uravneni\^a}, pages = {988--994}, publisher = {mathdoc}, volume = {27}, number = {6}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1991_27_6_a9/} }
N. N. Petrov. Control problems and separability axioms. Differencialʹnye uravneniâ, Tome 27 (1991) no. 6, pp. 988-994. http://geodesic.mathdoc.fr/item/DE_1991_27_6_a9/