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@article{DE_1980_16_8_a20, author = {V. B. Pilyugina}, title = {Investigation of a system with a triple zero characteristic root}, journal = {Differencialʹnye uravneni\^a}, pages = {1520--1522}, publisher = {mathdoc}, volume = {16}, number = {8}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1980_16_8_a20/} }
V. B. Pilyugina. Investigation of a system with a triple zero characteristic root. Differencialʹnye uravneniâ, Tome 16 (1980) no. 8, pp. 1520-1522. http://geodesic.mathdoc.fr/item/DE_1980_16_8_a20/