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@article{DE_1986_22_9_a1, author = {E. A. Barabanov and A. M. Nurmatov}, title = {The highest $\sigma$-exponent of linear {Hamiltonian} systems}, journal = {Differencialʹnye uravneni\^a}, pages = {1491--1499}, publisher = {mathdoc}, volume = {22}, number = {9}, year = {1986}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1986_22_9_a1/} }
E. A. Barabanov; A. M. Nurmatov. The highest $\sigma$-exponent of linear Hamiltonian systems. Differencialʹnye uravneniâ, Tome 22 (1986) no. 9, pp. 1491-1499. http://geodesic.mathdoc.fr/item/DE_1986_22_9_a1/