@article{01866011,
title = {Two-distance preserving functions.},
journal = {Beitr\"age zur Algebra und Geometrie},
volume = {43},
year = {2002},
pages = {557-564},
zbl = {1018.51009},
language = {en},
url = {http://dml.mathdoc.fr/item/01866011}
}
Khamsemanan, Nirattaya; Connelly, Robert. Two-distance preserving functions.. Beiträge zur Algebra und Geometrie, Tome 43 (2002) pp. 557-564. http://gdmltest.u-ga.fr/item/01866011/