@article{03599156, title = {A fixed point theorem for a nonlinear type contraction.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {1}, year = {1978}, pages = {57-62}, doi = {10.1155/S0161171278000071}, zbl = {0385.54029}, language = {en}, url = {http://dml.mathdoc.fr/item/03599156} }
Husain, S.A.; Sehgal, V.M. A fixed point theorem for a nonlinear type contraction.. International Journal of Mathematics and Mathematical Sciences, Tome 1 (1978) pp. 57-62. doi : 10.1155/S0161171278000071. http://gdmltest.u-ga.fr/item/03599156/