Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1973__14_2_a11, author = {Lis\'a, Jarmila}, title = {Cardinal sums and direct products in {Galois} connections}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {325--338}, publisher = {mathdoc}, volume = {14}, number = {2}, year = {1973}, mrnumber = {0329980}, zbl = {0265.06004}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1973__14_2_a11/} }
Lisá, Jarmila. Cardinal sums and direct products in Galois connections. Commentationes Mathematicae Universitatis Carolinae, Tome 14 (1973) no. 2, pp. 325-338. http://geodesic.mathdoc.fr/item/CMUC_1973__14_2_a11/