@article{ASCFM_1982__73_21_15_0,
     author = {Pabion, J.-F.},
     title = {$\Pi _2$ - {Th\'eorie} des ensembles},
     journal = {Annales scientifiques de l'Universit\'e de Clermont. Math\'ematiques},
     pages = {15--45},
     publisher = {UER de Sciences exactes et naturelles de l'Universit\'e de Clermont},
     volume = {73},
     number = {21},
     year = {1982},
     zbl = {0574.03040},
     language = {fr},
     url = {http://archive.numdam.org/item/ASCFM_1982__73_21_15_0/}
}