@article{05152744, title = {A normed space with the Beckman-Quarles property.}, journal = {Beitr\"age zur Algebra und Geometrie}, volume = {48}, year = {2007}, pages = {131-139}, zbl = {1128.51006}, language = {en}, url = {http://dml.mathdoc.fr/item/05152744} }
Ling, Joseph M. A normed space with the Beckman-Quarles property.. Beiträge zur Algebra und Geometrie, Tome 48 (2007) pp. 131-139. http://gdmltest.u-ga.fr/item/05152744/