Zhao, W., Zhang, Z. and Ye, Z. (2014) “MIDPOINT DERIVATIVE-BASED TRAPEZOID RULE FOR THE RIEMANN-STIELTJES INTEGRAL”, Italian Journal of Pure and Applied Mathematics, 33, pp. 369–376. Available at: https://journals.uniurb.it/index.php/ijpam/article/view/6279 (Accessed: 7 August 2026).