Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{PORMA_1959__18_3_114822, author = {Cunkle, C.H.}, title = {A note on {Boolean} operations}, journal = {Portugaliae mathematica}, pages = {177--179}, publisher = {mathdoc}, volume = {18}, number = {3}, year = {1959}, mrnumber = {0124248}, zbl = {0111.02402}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1959__18_3_114822/} }
Cunkle, C.H. A note on Boolean operations. Portugaliae mathematica, Tome 18 (1959) no. 3, pp. 177-179. http://geodesic.mathdoc.fr/item/PORMA_1959__18_3_114822/