ZHAO, Weijing; ZHANG, Zhaoning; YE, Zhijian. MIDPOINT DERIVATIVE-BASED TRAPEZOID RULE FOR THE RIEMANN-STIELTJES INTEGRAL. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 33, p. 369–376, 2014. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/6279. Acesso em: 7 aug. 2026.