Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MZ_1971__122_171610, author = {D. Brignole and N.C.A. Da Costa}, title = {On {Supernormal} {Ehresmann-Dedecker} {Universes.}}, journal = {Mathematische Zeitschrift}, pages = {342--350}, publisher = {mathdoc}, volume = {122}, year = {1971}, zbl = {0215.32603}, url = {http://geodesic.mathdoc.fr/item/MZ_1971__122_171610/} }
D. Brignole; N.C.A. Da Costa. On Supernormal Ehresmann-Dedecker Universes.. Mathematische Zeitschrift, Tome 122 (1971), pp. 342-350. http://geodesic.mathdoc.fr/item/MZ_1971__122_171610/