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@article{DE_1988_24_6_a1, author = {A. I. Astrovskii}, title = {A method for solving an observation-estimation problem in linear nonstationary systems}, journal = {Differencialʹnye uravneni\^a}, pages = {929--935}, publisher = {mathdoc}, volume = {24}, number = {6}, year = {1988}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1988_24_6_a1/} }
A. I. Astrovskii. A method for solving an observation-estimation problem in linear nonstationary systems. Differencialʹnye uravneniâ, Tome 24 (1988) no. 6, pp. 929-935. http://geodesic.mathdoc.fr/item/DE_1988_24_6_a1/