Simsek, E., and E. Tunç. 2014. “Some Approximation Properties of Szasz–Mirakyan–Bernstein Operators of the Chlodovsky Type”. Ukrains’kyi Matematychnyi Zhurnal 66 (6), 826–834. https://umj.imath.kiev.ua/index.php/umj/article/view/2180.