- Valery A. Gaiko, “Limit cycles of quadratic systems”, Nonlinear Analysis: Theory, Methods & Applications, 69, no. 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, no. 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, no. 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, no. 11, 2008, 2957
- Miriam Briskin, Nina Roytvarf, Yosef Yomdin, “Center conditions at infinity for Abel differential equations”, Ann. Math., 172, no. 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, no. 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, no. 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, no. 02, 2019, 1950017