@article{PORMA_1945__4_4_114631,
     author = {Hirsch, Guy},
     title = {Sur les groupes d'homologie de certains complexes de recouvrement},
     journal = {Portugaliae mathematica},
     pages = {225--237},
     publisher = {mathdoc},
     volume = {4},
     number = {4},
     year = {1945},
     mrnumber = {0013310},
     zbl = {0060.41004},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1945__4_4_114631/}
}