@article{10_4153_CJM_1971_021_5, author = {Rad\'o, F.}, title = {Congruence-Preserving {Isomorphisms} of the {Translation} {Group} associated with a {Translation} {Plane}}, journal = {Canadian journal of mathematics}, pages = {214--221}, year = {1971}, volume = {23}, number = {2}, doi = {10.4153/CJM-1971-021-5}, url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1971-021-5/} }