MAMADU, A. E. .; NJOSEH, I. N. . APPROXIMATE SOLUTIONS OF FRACTIONAL FREDHOLM-TYPE INTEGRO-DIFFERENTIAL EQUATIONS WITH CERTAIN ORTHOGONAL POLYNOMIAL. NIGERIAN JOURNAL OF SCIENCE AND ENVIRONMENT, [S. l.], v. 21, n. 1, 2023. Disponível em: https://delsunjse.com/index.php/njse/article/view/111. Acesso em: 19 may. 2024.