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@article{DE_1983_19_11_a26, author = {S. A. Nefedov}, title = {On the theory of controllability of systems with distributed parameters}, journal = {Differencialʹnye uravneni\^a}, pages = {1998--2001}, publisher = {mathdoc}, volume = {19}, number = {11}, year = {1983}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1983_19_11_a26/} }
S. A. Nefedov. On the theory of controllability of systems with distributed parameters. Differencialʹnye uravneniâ, Tome 19 (1983) no. 11, pp. 1998-2001. http://geodesic.mathdoc.fr/item/DE_1983_19_11_a26/