An Approach to Volterra and Fredholm Integro-Differential Equations via Six Non-Polynomial Cubic Spline functions. Journal of Basrah Researches (Sciences), [S. l.], v. 52, n. 1, p. 31–49, 2026. DOI: 10.56714/bjrs.52.1.3. Disponível em: https://jou.jobrs.edu.iq/index.php/home/article/view/372. Acesso em: 25 aug. 2026.