@article{GDZPPN002033585,
title = {Zur Linearit\"at 2-dimensionaler Raum-Zeit-Transformationen.},
journal = {Aequationes mathematicae},
volume = {22},
year = {1981},
pages = {266-276},
zbl = {0533.51003},
url = {http://dml.mathdoc.fr/item/GDZPPN002033585}
}
Stettler, Raymond. Zur Linearität 2-dimensionaler Raum-Zeit-Transformationen.. Aequationes mathematicae, Tome 22 (1981) pp. 266-276. http://gdmltest.u-ga.fr/item/GDZPPN002033585/