@article{articleb9d10615,
title   = {On Peixoto's conjecture for flows on non-orientable 2-manifolds},
author = {Vidalon, Carlos Teobaldo Gutierrez and Pires, Benito},
year = {2005},
doi = {10.1090/S0002-9939-04-07687-7},
journal   = {Proceedings of the American Mathematical Society}
}