@article{CMUC_1978_19_2_a16,
     author = {Taskovi\'c, Milan R.},
     title = {On contractive mappings in metric spaces},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {409--413},
     year = {1978},
     volume = {19},
     number = {2},
     mrnumber = {0488014},
     zbl = {0448.54044},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1978_19_2_a16/}
}