A fixed point theorem and the Ulam stability in generalized dq-metric spaces
| Autor: | Brzdęk, Janusz, Karapınar, Erdal, Petruşel, Adrian |
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| Zdroj: | In Journal of Mathematical Analysis and Applications 1 November 2018 467(1):501-520 |
| Databáze: | ScienceDirect |
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