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@article{DE_1983_19_5_a4, author = {F. Neiman}, title = {The theory of global properties of $n$th-order ordinary linear differential equations}, journal = {Differencialʹnye uravneni\^a}, pages = {799--808}, publisher = {mathdoc}, volume = {19}, number = {5}, year = {1983}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1983_19_5_a4/} }
F. Neiman. The theory of global properties of $n$th-order ordinary linear differential equations. Differencialʹnye uravneniâ, Tome 19 (1983) no. 5, pp. 799-808. http://geodesic.mathdoc.fr/item/DE_1983_19_5_a4/