Chen, Hebai; Tang, Yilei; Xiao, Dongmei On the uniqueness of limit cycles in second-order oscillators. (English) Zbl 1523.34030 J. Differ. Equations 370, 140-166 (2023). Reviewer: Wilker Fernandes (São João del-Rei) MSC: 34C05 34C15 34C23 34D23 × Cite Format Result Cite Review PDF Full Text: DOI
Chen, Xiudong; Llibre, Jaume; Zhang, Zhifen Sufficient conditions for the existence of at least \(n\) or exactly \(n\) limit cycles for the Liénard differential systems. (English) Zbl 1131.34026 J. Differ. Equations 242, No. 1, 11-23 (2007). Reviewer: Sergei Yu. Pilyugin (St. Petersburg) MSC: 34C05 34C07 × Cite Format Result Cite Review PDF Full Text: DOI