@article{CMH_1967__42_139332,
     author = {Reinhard Olivier},
     title = {\"Uber den {Defekt} simplizialer {Abbildungen} von {Mannigfaltigkeiten.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {49--59},
     publisher = {mathdoc},
     volume = {42},
     year = {1967},
     zbl = {0148.17302},
     url = {http://geodesic.mathdoc.fr/item/CMH_1967__42_139332/}
}