@article{CMUC_1989__30_4_a15,
     author = {Waszak, Aleksander},
     title = {A contribution to the theory of countably modulared spaces of double sequences},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {743--748},
     publisher = {mathdoc},
     volume = {30},
     number = {4},
     year = {1989},
     mrnumber = {1045904},
     zbl = {0728.46014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1989__30_4_a15/}
}