@article{SLC_1984_10_a20,
     author = {Antonio Machi},
     title = {Homologische {Methoden} in der {Theorie} der {Hyperkarten}},
     journal = {S\'eminaire lotharingien de combinatoire},
     year = {1984},
     volume = {10},
     url = {http://geodesic.mathdoc.fr/item/SLC_1984_10_a20/}
}