@article{article18c0240e, title = {Quadratic systems possessing an infinite elliptic-saddle or an infinite nilpotent saddle}, author = {Artés, Joan Carles and Mota, Marcos Coutinho and Rezende, Alex Carlucci}, year = {2024}, doi = {10.1142/S0218127424300234}, journal = {International Journal of Bifurcation and Chaos} }