Grotta-Ragazzo , C.Nascimento, Francisco José dos Santos2026-07-242026-07-242025-01-15https://repositorio.univasf.edu.br/handle/123456789/1491https://creativecommons.org/licenses/by/4.0/Global normalizationsCentersPlanar vectorfieldsGlobal normalizations for centers of planar vector fieldsArtigo de Periódicohttps://doi.org/10.1016/j.jde.2024.09.053CIENCIAS EXATAS E DA TERRA