“Degree of Approximation of Lipschitz Function By (C, 1) (e, c) Means of its Fourier Series”, J. Int. Acad. Phys. Sci., vol. 15, no. 5, pp. 83–94, Oct. 2011, Accessed: Oct. 23, 2026. [Online]. Available: http://www.iaps.org.in/journal/index.php/journaliaps/article/view/617