Application of the Fourier cosine series to the approximation of solutions to initial non-Dirichlet boundary-value problems. Archives of Mechanics - Test, [S. l.], v. 49, n. 4, p. 635–645, 1997. DOI: 10.24423/aom.1428. Disponível em: https://am3.ippt.pan.pl/index.php/am/article/view/v49p635. Acesso em: 27 aug. 2025.