@article{MZ_1970__116_171390,
     author = {Arthur H. Kruse},
     title = {Local {Deformation} {Retractions.}},
     journal = {Mathematische Zeitschrift},
     pages = {264--270},
     publisher = {mathdoc},
     volume = {116},
     year = {1970},
     url = {http://geodesic.mathdoc.fr/item/MZ_1970__116_171390/}
}