@article{AMLG_1972__15_137871,
     author = {Maurice Boffa},
     title = {L'Axiome de la paire dans le syst\`eme de {Zermelo.}},
     journal = {Archiv f\"ur mathematische Logik und Grundlagenforschung},
     pages = {97--98},
     publisher = {mathdoc},
     volume = {15},
     year = {1972},
     zbl = {0301.02070},
     url = {http://geodesic.mathdoc.fr/item/AMLG_1972__15_137871/}
}