Degree of approximation of Conjugate Series of a Fourier Series by (E,r)(N,p,q) Means. JOURNAL OF ADVANCES IN MATHEMATICS, [S. l.], v. 9, n. 2, p. 1955–1962, 2014. DOI: 10.24297/jam.v9i2.2412. Disponível em: https://www.rajpub.com/index.php/jam/article/view/2412jam. Acesso em: 19 jun. 2026.