@article{urn:eudml:doc:43872,
title = {Caracter\'\i stica de Euler y categor\'\i as de fracciones.},
journal = {Collectanea Mathematica},
volume = {24},
year = {1973},
pages = {211-217},
language = {es},
url = {http://dml.mathdoc.fr/item/urn:eudml:doc:43872}
}
Castellet, Manuel. Característica de Euler y categorías de fracciones.. Collectanea Mathematica, Tome 24 (1973) pp. 211-217. http://gdmltest.u-ga.fr/item/urn:eudml:doc:43872/