@article{1200686032,
author = {Nagumo, Mitio},
title = {Degree of mapping of manifolds based on that of Euclidean open sets},
journal = {Osaka Math. J.},
volume = {2},
number = {1},
year = {1950},
pages = { 105-118},
language = {en},
url = {http://dml.mathdoc.fr/item/1200686032}
}
Nagumo, Mitio. Degree of mapping of manifolds based on that of Euclidean open sets. Osaka Math. J., Tome 2 (1950) no. 1, pp. 105-118. http://gdmltest.u-ga.fr/item/1200686032/