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@article{DE_1986_22_2_a1, author = {G. A. Kurina}, title = {Linear {Hamiltonian} systems that are not solved with respect to the derivative}, journal = {Differencialʹnye uravneni\^a}, pages = {193--198}, publisher = {mathdoc}, volume = {22}, number = {2}, year = {1986}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1986_22_2_a1/} }
G. A. Kurina. Linear Hamiltonian systems that are not solved with respect to the derivative. Differencialʹnye uravneniâ, Tome 22 (1986) no. 2, pp. 193-198. http://geodesic.mathdoc.fr/item/DE_1986_22_2_a1/