@article{00844421, title = {A note on metric preserving functions.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {19}, year = {1996}, pages = {199-200}, doi = {10.1155/S0161171296000282}, zbl = {0840.26006}, language = {en}, url = {http://dml.mathdoc.fr/item/00844421} }
Dobos, Jozef; Piotrowski, Zbigniew. A note on metric preserving functions.. International Journal of Mathematics and Mathematical Sciences, Tome 19 (1996) pp. 199-200. doi : 10.1155/S0161171296000282. http://gdmltest.u-ga.fr/item/00844421/