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@article{DE_1977_13_5_a16, author = {A. F. Andreev and I. V. Pehenko}, title = {A system with one zero root of the characteristic equation}, journal = {Differencialʹnye uravneni\^a}, pages = {944--946}, publisher = {mathdoc}, volume = {13}, number = {5}, year = {1977}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1977_13_5_a16/} }
A. F. Andreev; I. V. Pehenko. A system with one zero root of the characteristic equation. Differencialʹnye uravneniâ, Tome 13 (1977) no. 5, pp. 944-946. http://geodesic.mathdoc.fr/item/DE_1977_13_5_a16/