Stancu, Dimitrie D. “On the Approximation of Functions by Means of the Operators of Binomial Type of Tiberiu Popoviciu”. Rev. Anal. Numér. Théor. Approx. 30, no. 1 (February 1, 2001): 95–105. Accessed March 1, 2024. https://ictp.acad.ro/jnaat/journal/article/view/2001-vol30-no1-art13.