@article{article76d2c86e,
title   = {Existence of periodic solutions and bifurcation points for generalized ordinary differential equations},
author = {Federson, Marcia and Mawhin, Jean and Mesquita, Jaqueline Godoy},
year = {2021},
doi = {10.1016/j.bulsci.2021.102991},
journal   = {Bulletin des Sciences Mathématiques}
}