@article{ASENS_1963_3_80_4_349_0,
     author = {Ehresmann, Charles},
     title = {Cat\'egories structur\'ees},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {349--426},
     publisher = {Elsevier},
     volume = {3e s{\'e}rie, 80},
     number = {4},
     year = {1963},
     doi = {10.24033/asens.1125},
     mrnumber = {33 #5694},
     zbl = {0128.02002},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/asens.1125/}
}