@article{MZ_1962__78_170038,
     author = {Hanfried Lenz},
     title = {Halbdrehungen im {Raum.}},
     journal = {Mathematische Zeitschrift},
     pages = {410--419},
     publisher = {mathdoc},
     volume = {78},
     year = {1962},
     zbl = {0101.37401},
     url = {http://geodesic.mathdoc.fr/item/MZ_1962__78_170038/}
}