Valery A. Gaiko, “Limit cycles of quadratic systems”, Nonlinear Analysis: Theory, Methods & Applications, 69, № 7, 2008, 2150
Jieping Gu, André Zegeling, Wentao Huang, “Bifurcation of Limit Cycles and Isochronous Centers on Center Manifolds for a Class of Cubic Kolmogorov Systems in ${\mathbb {R}}^{3}$”, Qual. Theory Dyn. Syst., 22, № 2, 2023, 42
TONGHUA ZHANG, YU-CHU TIAN, MOSES O. TADÉ, “ON THE NUMBER OF ZEROS OF THE ABELIAN INTEGRALS FOR A CLASS OF PERTURBED LIÉNARD SYSTEMS”, Int. J. Bifurcation Chaos, 17, № 09, 2007, 3281
Chaoxiong Du, Yirong Liu, “General center conditions and bifurcation of limit cycles for a quasi-symmetric seventh degree system”, Computers & Mathematics with Applications, 56, № 11, 2008, 2957
Miriam Briskin, Nina Roytvarf, Yosef Yomdin, “Center conditions at infinity for Abel differential equations”, Ann. Math., 172, № 1, 2010, 437
12th GAMM - IMACS International Symposium on Scientific Computing, Computer Arithmetic and Validated Numerics (SCAN 2006), 2006, 5
Zbigniew Galias, Warwick Tucker, “The Songling system has exactly four limit cycles”, Applied Mathematics and Computation, 415, 2022, 126691
JUSTINO ALAVEZ-RAMÍREZ, GAMALIEL BLÉ, JORGE LÓPEZ-LÓPEZ, JAUME LLIBRE, “ON THE MAXIMUM NUMBER OF LIMIT CYCLES OF A CLASS OF GENERALIZED LIÉNARD DIFFERENTIAL SYSTEMS”, Int. J. Bifurcation Chaos, 22, № 03, 2012, 1250063
R. Huzak, P. De Maesschalck, F. Dumortier, “Limit cycles in slow-fast codimension 3 saddle and elliptic bifurcations”, Journal of Differential Equations, 255, № 11, 2013, 4012
Jaume Llibre, Xiang Zhang, “Limit Cycles for Discontinuous Planar Piecewise Linear Differential Systems Separated by an Algebraic Curve”, Int. J. Bifurcation Chaos, 29, № 02, 2019, 1950017