Voir la notice du chapitre de livre provenant de la source Math-Net.Ru
[1] Ilyashenko Yu. S., Li Veigu, Nelokalnye bifurkatsii, Elektronnoe izdanie, MTsNMO, M., 2016, 327–335
[2] Malta I. P., Palis J., “Families of vector fields with finite modulus of stability”, Lecture Notes in Math., 898, Springer, Berlin–New York, 1981, 212–229 | DOI | MR | Zbl
[3] Sotomayor J., “Generic one-parameter families of vector fields on two-dimensional manifolds”, Inst. Hautes Études Sci. Publ. Math., 43 (1974), 5–46 | DOI | MR | Zbl
[4] Ilyashenko Yu., Kudryashov Yu., Schurov I., “Global bifurcations in the two-sphere: a new perspective”, Invent. Math., 213:2 (2018), 461–506 | DOI | MR | Zbl
[5] Kotova A., Stanzo V., “On few-parameter generic families of vector fields on the two-dimensional sphere”, Concerning the Hilbert 16th problem, AMS Transl. Ser. 2, 165, AMS, Providence, RI, 1995 ; Adv. Math. Sci., 23, 155–201 | MR | Zbl
[6] Andronov A. A., Pontryagin L. S., “Grubye sistemy”, DAN SSSR, 14:5 (1937), 247–250 | MR