@article{Adjaï2022, 
author = {K. K. D. Adjaï and J. Akande and A. V. R. Yehossou and M. D. Monsia},
title = {Periodic solutions and limit cycles of mixed Lienard-type differential equations},
year = {2022},
journal = {AIMS Mathematics},
volume = {7},
number = {8},
pages = {15195-15211},
keywords = {polynomial mixed Lienard-type differential equations, exact harmonic and isochronous periodic solutions, exact algebraic limit cycles, classical existence theorems},
url = {https://www.sciopen.com/article/10.3934/math.2022833},
doi = {10.3934/math.2022833},
abstract = {In the attractive research field of nonlinear differential equations, there are a few studies devoted to finding exact and explicit harmonic and isochronous periodic solutions and limit cycles. In this contribution, we present some classes of polynomial mixed Lienard-type differential equations that can generate many equations with exact solutions. These classes of equations constitute counterexamples of the classical existence theorems.}
}