@article{MZ_1975__143_172221,
     author = {Henning Hauschild},
     title = {Allgemeine {Lage} und \"aquivariante {Homotopie.}},
     journal = {Mathematische Zeitschrift},
     pages = {155--164},
     year = {1975},
     volume = {143},
     zbl = {0299.55016},
     url = {http://geodesic.mathdoc.fr/item/MZ_1975__143_172221/}
}