Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{JRAM_1977__295_151924, author = {Siegfried Graf}, title = {A selection theorem for {Boolean} correspondences.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {169--186}, publisher = {mathdoc}, volume = {295}, year = {1977}, zbl = {0366.06022}, url = {http://geodesic.mathdoc.fr/item/JRAM_1977__295_151924/} }
Siegfried Graf. A selection theorem for Boolean correspondences.. Journal für die reine und angewandte Mathematik, Tome 295 (1977), pp. 169-186. http://geodesic.mathdoc.fr/item/JRAM_1977__295_151924/