SARHAN, M. A.; SHIHAB, S.; RASHEED, M. A Novel Spectral Modified Pell Polynomials for Solving Singular Differential Equations. Al-Mustansiriyah Journal of Science, [S. l.], v. 32, n. 1, p. 18–24, 2021. DOI: 10.23851/mjs.v32i1.930. Disponível em: https://mjs.uomustansiriyah.edu.iq/index.php/MJS/article/view/930. Acesso em: 22 mar. 2023.