@article{PIM_1982_N_S_32_46_a1,
     author = {A. C. Babu},
     title = {A {Converse} {To} {A} {Generalized} {Banach} {Contraction} {Principle}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {5 },
     publisher = {mathdoc},
     volume = {_N_S_32},
     number = {46},
     year = {1982},
     url = {http://geodesic.mathdoc.fr/item/PIM_1982_N_S_32_46_a1/}
}