@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/}
}