MISRA, M. APPROXIMATION OF FOURIER SERIES OF A FUNCTION OF LIPCHITZ CLASS BY PRODUCT MEANS. JOURNAL OF ADVANCES IN MATHEMATICS, [S. l.], v. 9, n. 4, p. 2475–2484, 2014. DOI: 10.24297/jam.v9i4.6876. Disponível em: https://rajpub.com/index.php/jam/article/view/6876. Acesso em: 22 jul. 2024.