@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/}
}