@article{JRAM_1976__280_151677,
     author = {Gudrun Kalmbach},
     title = {Extension of topological homology theories to partially orderd sets.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {134--156},
     year = {1976},
     volume = {280},
     zbl = {0322.06004},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1976__280_151677/}
}