Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{PMFA_1972__17_3_a1, author = {Ehresmann, Charles}, title = {Tendence k jednot\v{e} v matematice}, journal = {Pokroky matematiky, fyziky a astronomie}, pages = {121--129}, publisher = {mathdoc}, volume = {17}, number = {3}, year = {1972}, mrnumber = {0490612}, zbl = {0236.00019}, language = {cz}, url = {http://geodesic.mathdoc.fr/item/PMFA_1972__17_3_a1/} }
Ehresmann, Charles. Tendence k jednotě v matematice. Pokroky matematiky, fyziky a astronomie, Tome 17 (1972) no. 3, pp. 121-129. http://geodesic.mathdoc.fr/item/PMFA_1972__17_3_a1/