Plukas, Kostas, and Danutė Plukienė. “Truncation Error Estimation for Newton–Cotes Quadrature Formulas”. Lietuvos matematikos rinkinys 44, no. spec. (December 17, 2004): 660–664. Accessed May 20, 2024. https://www.journals.vu.lt/LMR/article/view/32222.