Orthogonal Functions Solving Linear functional Differential EquationsUsing Chebyshev Polynomial. Baghdad Science Journal, Iraq, Baghdad, v. 5, n. 1, p. 143–148, 2008. DOI: 10.21123/bsj.2008.5.1.143-148. Disponível em: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/877.. Acesso em: 4 jul. 2024.