@article{PIM_1978_N_S_23_37_a22,
     author = {Milan R. Taskovi\'c},
     title = {A {Generalization} {Of} {Banach's} {Contraction} {Principle}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {179 },
     publisher = {mathdoc},
     volume = {_N_S_23},
     number = {37},
     year = {1978},
     url = {http://geodesic.mathdoc.fr/item/PIM_1978_N_S_23_37_a22/}
}