@article{120469, author = {Stefan Czerwik}, title = {Contraction mappings in $b$-metric spaces}, journal = {Acta Mathematica et Informatica Universitatis Ostraviensis}, volume = {01}, year = {1993}, pages = {5-11}, zbl = {0849.54036}, mrnumber = {1250922}, language = {en}, url = {http://dml.mathdoc.fr/item/120469} }
Czerwik, Stefan. Contraction mappings in $b$-metric spaces. Acta Mathematica et Informatica Universitatis Ostraviensis, Tome 01 (1993) pp. 5-11. http://gdmltest.u-ga.fr/item/120469/
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