@article{SE_1965__7__A3_0,
     author = {Ehresmann, Charles},
     title = {Esp\`eces de structures sous-inductives},
     journal = {S\'eminaire Ehresmann. Topologie et g\'eom\'etrie diff\'erentielle},
     note = {talk:3},
     pages = {1--50},
     publisher = {Secr\'etariat math\'ematique},
     volume = {7},
     year = {1965},
     zbl = {0136.25802},
     language = {fr},
     url = {http://www.numdam.org/item/SE_1965__7__A3_0/}
}