@article{CMUC_1962__3_3_a2,
     author = {Pultr, Ale\v{s}},
     title = {On the homology theory of discrete spaces},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {23--43},
     publisher = {mathdoc},
     volume = {03},
     number = {3},
     year = {1962},
     mrnumber = {0159326},
     zbl = {0105.16902},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1962__3_3_a2/}
}