@article{articleb460e166,
title   = {On 'C POT.R'-closing for flows on orientable and non-orientable 2-manifolds},
author = {Vidalon, Carlos Teobaldo Gutiérrez and Pires, Benito Frazão},
year = {2009},
doi = {10.1007/s00574-009-0027-7},
journal   = {Bulletin of the Brazilian Mathematical Society, New Series}
}