1.
Llibre J, da Silva MF. Global phase portraits of Kukles differential systems with homogenous polynomial nonlinearities of degree 5 having a center. TMNA [Internet]. 2016 Aug. 7 [cited 2024 Jul. 22];48(1):257-82. Available from: https://apcz.umk.pl/TMNA/article/view/TMNA.2016.049