@article{MZ_1975__141_172163,
     author = {G\"unter T\"orner},
     title = {Homomorphismen von affinen {Hjelmslev-Ebenen.}},
     journal = {Mathematische Zeitschrift},
     pages = {159--168},
     year = {1975},
     volume = {141},
     url = {http://geodesic.mathdoc.fr/item/MZ_1975__141_172163/}
}