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@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/} }
Pultr, Aleš. On the homology theory of discrete spaces. Commentationes Mathematicae Universitatis Carolinae, Tome 03 (1962) no. 3, pp. 23-43. http://geodesic.mathdoc.fr/item/CMUC_1962__3_3_a2/