@article{03798523, title = {A fixed point theorem for contraction mappings.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {5}, year = {1982}, pages = {301-304}, doi = {10.1155/S0161171282000271}, zbl = {0506.47037}, language = {en}, url = {http://dml.mathdoc.fr/item/03798523} }
Sehgal, V.M. A fixed point theorem for contraction mappings.. International Journal of Mathematics and Mathematical Sciences, Tome 5 (1982) pp. 301-304. doi : 10.1155/S0161171282000271. http://gdmltest.u-ga.fr/item/03798523/