Gupta, Vijay, and Michael Th. Rassias. “Asymptotic Formula in Simultaneous Approximation for Certain Ismail-May-Baskakov Operators”. J. Numer. Anal. Approx. Theory 50, no. 2 (December 31, 2021): 153–163. Accessed April 18, 2024. https://ictp.acad.ro/jnaat/journal/article/view/1235.