U. K. SHRIVASTAVA; H. L. RATHORE. Degree of Approximation of Lipschitz Function By (C, 1) (e, c) Means of its Fourier Series. Journal of International Academy of Physical Sciences, [S. l.], v. 15, n. 5, p. 83–94, 2011. Disponível em: https://www.iaps.org.in/journal/index.php/journaliaps/article/view/617. Acesso em: 19 may. 2024.