Voir la notice de l'article provenant de la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts
@article{PIM_1978_N_S_23_37_a10, author = {S. A. Husain and V. M. Sehgal}, title = {A {Theorem} {On} {Contraction} {Mappings}}, journal = {Publications de l'Institut Math\'ematique}, pages = {81 }, publisher = {mathdoc}, volume = {_N_S_23}, number = {37}, year = {1978}, url = {http://geodesic.mathdoc.fr/item/PIM_1978_N_S_23_37_a10/} }
S. A. Husain; V. M. Sehgal. A Theorem On Contraction Mappings. Publications de l'Institut Mathématique, _N_S_23 (1978) no. 37, p. 81 . http://geodesic.mathdoc.fr/item/PIM_1978_N_S_23_37_a10/