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@article{DE_1976_12_2_a22, author = {G. N. Petrovskiǐ}, title = {The approximability property of regular systems of linear differential equations}, journal = {Differencialʹnye uravneni\^a}, pages = {359--361}, publisher = {mathdoc}, volume = {12}, number = {2}, year = {1976}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1976_12_2_a22/} }
G. N. Petrovskiǐ. The approximability property of regular systems of linear differential equations. Differencialʹnye uravneniâ, Tome 12 (1976) no. 2, pp. 359-361. http://geodesic.mathdoc.fr/item/DE_1976_12_2_a22/