@article{AIF_1960__10__307_0,
     author = {Ehresmann, Charles},
     title = {Cat\'egories inductives et pseudogroupes},
     journal = {Annales de l'Institut Fourier},
     pages = {307--332},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {10},
     year = {1960},
     doi = {10.5802/aif.104},
     mrnumber = {22 #8525},
     zbl = {0099.26002},
     language = {fr},
     url = {http://www.numdam.org/articles/10.5802/aif.104/}
}