Bo Huang, Wei Niu, “LIMIT CYCLES FOR TWO CLASSES OF PLANAR POLYNOMIAL DIFFERENTIAL SYSTEMS WITH UNIFORM ISOCHRONOUS CENTERS”, jaac, 9, no. 3, 2019, 943
Claudio A. Buzzi, Yagor Romano Carvalho, Armengol Gasull, “Limit cycles for some families of smooth and non-smooth planar systems”, Nonlinear Analysis, 207, 2021, 112298
Jaume Llibre, Douglas D. Novaes, Marco A. Teixeira, “Maximum number of limit cycles for certain piecewise linear dynamical systems”, Nonlinear Dyn, 82, no. 3, 2015, 1159
Dana Schlomiuk, Normal Forms, Bifurcations and Finiteness Problems in Differential Equations, 2004, 471
Jaume Llibre, Salomón Rebollo-Perdomo, “Invariant Parallels, Invariant Meridians and Limit Cycles of Polynomial Vector Fields on Some 2-Dimensional Algebraic Tori in $\mathbb R ^3$ R 3”, J Dyn Diff Equat, 25, no. 3, 2013, 777
Stephen Lynch, Dynamical Systems with Applications using MATLAB®, 2014, 355
Alexander Brudnyi, “Graphs of zeros of analytic families”, Trans. Amer. Math. Soc., 357, no. 5, 2004, 1859
Hebai Chen, Yilei Tang, “Proof of Artés–Llibre–Valls's conjectures for the Higgins–Selkov and the Selkov systems”, Journal of Differential Equations, 266, no. 11, 2019, 7638
Tessina H. Scholl, Veit Hagenmeyer, Lutz Gröll, “On norm-based estimations for domains of attraction in nonlinear time-delay systems”, Nonlinear Dyn, 100, no. 3, 2020, 2027
João C. Medrado, Joan Torregrosa, “Uniqueness of limit cycles for sewing planar piecewise linear systems”, Journal of Mathematical Analysis and Applications, 431, no. 1, 2015, 529