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[1] Kubyshkin E. P., “Bifurkatsiya periodicheskikh reshenii v kriticheskom sluchae dvukh par chisto mnimykh kornei pri nalichii starshikh rezonansov”, Differents. uravneniya, 22:10 (1986), 1693–1697 | MR | Zbl
[2] Samoilenko A. M., Polesya I. V., “Rozhdenie invariantnykh mnozhestv v okrestnosti polozheniya ravnovesiya”, Differents. uravneniya, 11:8 (1975), 1409–1415 | MR
[3] Bibikov Yu. N., Mnogochastotnye nelineinye kolebaniya i ikh bifurkatsii, Izd-vo Leningradskogo un-ta, L., 1991, 143 pp. | MR
[4] Bryuno A. D., Lokalnyi metod nelineinogo analiza differentsialnykh uravnenii, Nauka, M., 1979, 255 pp. | MR
[5] Usachev Yu. V., O nalichii nenulevogo sostoyaniya ravnovesiya sistemy differentsialnykh uravnenii, Dep. v VINITI 02.04.90, No 1740-B90, Ryazansk. gos. ped. in-t, Ryazan, 1990, 10 pp. | MR
[6] Demidovich B. P., Lektsii po matematicheskoi teorii ustoichivosti, Nauka, M., 1967, 472 pp. | MR
[7] Kantorovich L. V., Akilov G. P., Funktsionalnyi analiz, Nauka, M., 1984, 752 pp. | MR | Zbl