CRUZ-SANTIAGO, R.; LÓPEZ-BONILLA, J.; LÓPEZ-VÁZQUEZ, R. Differentiation of Fourier Series via Orthogonal Derivative. Journal of Institute of Science and Technology, [S. l.], v. 20, n. 2, p. 113–114, 2015. DOI: 10.3126/jist.v20i2.13963. Disponível em: https://www.nepjol.info/index.php/JIST/article/view/13963. Acesso em: 14 dec. 2024.