Okor, Tega, Grace, Chinyere Nwachukwu, and Fola, John Adeyeye. “ROBUST EXTENDED TRAPEZOIDAL RULES FOR TWO-POINT STIFF AND NON-STIFF BOUNDARY VALUE PROBLEMS.: Array”. Journal of the Nigerian Mathematical Society 40, no. 2 (August 31, 2021): 79–95. Accessed April 26, 2024. https://ojs.ictp.it/jnms/index.php/jnms/article/view/608.