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[1] Volokitin E.P., Ivanov V.V., “Izokhronnost i kommutiruemost polinomialnykh vektornykh polei”, Sib. mat. zhurn., 40:1 (1999), 30–48 | MR | Zbl
[2] Amelkin V.V., Korsantiya O.B., “Izokhronnye i silno izokhronnye kolebaniya dvumernykh monodromnykh golomorfnykh dinamicheskikh sistem”, Differents. uravneniya, 42:2 (2006), 147–152 | MR
[3] Amelkin V.V., “Silnaya izokhronnost sistemy Lenara”, Differents. uravneniya, 42:5 (2006), 579–582 | MR
[4] Kukles I.S., Piskunov N.S., “Ob izokhronnosti kolebanii dlya konservativnykh i nekonservativnykh sistem”, Dokl. AN SSSR, 17:9 (1937), 467–470
[5] Rudenok A.E., “Silnaya izokhronnost tsentra. O periodakh predelnykh tsiklov sistemy Lenara”, Differents. uravneniya, 11:5 (1975), 811–819 | MR | Zbl
[6] Amelkin V.V., Korsantiya O.B., “Usloviya silnoi izokhronnosti 4-go poryadka odnoi sistemy Nyutona”, Materialy mezhdunar. konf. “Differentsialnye uravneniya i sistemy kompyuternoi algebry (DE CAS' 2005)”, Ch. 1, Minsk, 2005, 36–42