@article{MM2_1971__5_154071,
     author = {Wolfgang Zimmermann},
     title = {\"Uber einen {Typ} von injektiven {Klassen.}},
     journal = {Manuscripta mathematica},
     pages = {229--234},
     publisher = {mathdoc},
     volume = {5},
     year = {1971},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MM2_1971__5_154071/}
}