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@article{DE_1966_2_3_a0, author = {N. N. Krasovskii and A. B. Kurzhanskii}, title = {On the question of observability of systems with retardation}, journal = {Differencialʹnye uravneni\^a}, pages = {299--308}, publisher = {mathdoc}, volume = {2}, number = {3}, year = {1966}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1966_2_3_a0/} }
N. N. Krasovskii; A. B. Kurzhanskii. On the question of observability of systems with retardation. Differencialʹnye uravneniâ, Tome 2 (1966) no. 3, pp. 299-308. http://geodesic.mathdoc.fr/item/DE_1966_2_3_a0/