Mamadu, A. E., and I. N. Njoseh. “APPROXIMATE SOLUTIONS OF FRACTIONAL FREDHOLM-TYPE INTEGRO-DIFFERENTIAL EQUATIONS WITH CERTAIN ORTHOGONAL POLYNOMIAL”. NIGERIAN JOURNAL OF SCIENCE AND ENVIRONMENT 21, no. 1 (June 7, 2023). Accessed May 19, 2024. https://delsunjse.com/index.php/njse/article/view/111.