Stancu, Dimitrie D., and Felicia Stancu. “Quadrature Rules Obtained by Means of Interpolatory Linear Positive Operators”. Rev. Anal. Numér. Théor. Approx. 21, no. 1 (February 1, 1992): 75–81. Accessed November 23, 2024. https://ictp.acad.ro/jnaat/journal/article/view/1992-vol21-no1-art11.