First and Second Chebyshev Wavelets Spectral Method for Solving Variational Problems. Journal of the College of Basic Education, [S. l.], v. 18, n. 75, p. 49–64, 2023. DOI: 10.35950/cbej.v18i75.9126. Disponível em: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/9126.. Acesso em: 17 jul. 2024.