@article{MOMA_1997__123_1_178773,
     author = {Markus Stroppel},
     title = {The {Skew-Hyperbolic} {Motion} {Group} of the {Quaternion} {Plane.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {253--274},
     publisher = {mathdoc},
     volume = {123},
     number = {1},
     year = {1997},
     zbl = {0885.51014},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1997__123_1_178773/}
}