@article{CTGDC_1966__8__A1_0,
author = {Ehresmann, Charles},
title = {Trends toward unity in mathematics},
journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
volume = {8},
year = {1966},
pages = {1-7},
zbl = {0147.24103},
language = {en},
url = {http://dml.mathdoc.fr/item/CTGDC_1966__8__A1_0}
}
Ehresmann, Charles. Trends toward unity in mathematics. Cahiers de Topologie et Géométrie Différentielle Catégoriques, Tome 8 (1966) pp. 1-7. http://gdmltest.u-ga.fr/item/CTGDC_1966__8__A1_0/