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I am researching contractive mappings and I need the article of I. A. Bakhtin "The contraction principle in quasi metric spaces"(1989) or at least part where explanation is given for introduction of quasi metric spaces (in contemporary literature they are called b-metric spaces) as it is a pioneering work in the field but impossible to find. Is there anyone who has read this paper or knows the answer to the question?

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  • $\begingroup$ Send me your address email . Im interests research in b-metric space $\endgroup$
    – Seddik Merdaci
    Commented Feb 7, 2021 at 17:16

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