Toader, Silvia. “An Approximation Operator of Stancu Type”. Rev. Anal. Numér. Théor. Approx. 34, no. 1 (February 1, 2005): 115–121. Accessed April 14, 2025. https://ictp.acad.ro/jnaat/journal/article/view/2005-vol34-no1-art13.