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Some approximation properties of bivariate Bleimann–Butzer–Hahn operators based on (p, q)-integers

Crossref DOI link: https://doi.org/10.1007/s40574-016-0080-2

Published Online: 2016-05-18

Published Print: 2017-06

Update policy: https://doi.org/10.1007/springer_crossmark_policy