@article{MZ_1977__155_172556,
     author = {Roswitha Harting},
     title = {V-Cofibrationen und {V-Kann-Erweiterungen.}},
     journal = {Mathematische Zeitschrift},
     pages = {181--198},
     year = {1977},
     volume = {155},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MZ_1977__155_172556/}
}