Geodesic
Asymptotic behavior of the solutions of systems with transformed argument
Trudy Matematicheskogo Instituta imeni V.A. Steklova, Tome 32 (1977) no. 1 
V. P. Skripnik. Asymptotic behavior of the solutions of systems with transformed argument. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Tome 32 (1977) no. 1. http://geodesic.mathdoc.fr/item/RM_1977_32_1_a33/
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     title = {Asymptotic behavior of the solutions of systems with transformed argument},
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     url = {http://geodesic.mathdoc.fr/item/RM_1977_32_1_a33/}
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Voir la notice de l'article provenant de la source Math-Net.Ru

[1] R. Bellman, Teoriya ustoichivosti reshenii differentsialnykh uravnenii, IL, M., 1954

[2] L. E. Elsgolts, S. B. Norkin, Vvedenie v teoriyu differentsialnykh uravnenii s otklonyayuschimsya argumentom, Nauka, M., 1971 | MR