@article{SE_1964__6__A4_0,
     author = {Houdebine, Jean},
     title = {Classes et ensembles},
     journal = {S\'eminaire Ehresmann. Topologie et g\'eom\'etrie diff\'erentielle},
     note = {talk:4},
     pages = {1--22},
     publisher = {Secr\'etariat math\'ematique},
     volume = {6},
     year = {1964},
     mrnumber = {173636},
     zbl = {0168.25003},
     language = {fr},
     url = {http://www.numdam.org/item/SE_1964__6__A4_0/}
}