@article{05726426,
title = {A set of axioms for the degree of a tangent vector field on differentiable manifolds.},
journal = {Fixed Point Theory and Applications [electronic only]},
volume = {2010},
year = {2010},
doi = {10.1155/2010/845631},
zbl = {1196.57026},
language = {en},
url = {http://dml.mathdoc.fr/item/05726426}
}
Furi, Massimo; Pera, Maria Patrizia; Spadini, Marco. A set of axioms for the degree of a tangent vector field on differentiable manifolds.. Fixed Point Theory and Applications [electronic only], Tome 2010 (2010) . doi : 10.1155/2010/845631. http://gdmltest.u-ga.fr/item/05726426/