Kurşun, S., M. Turgay, O. Alagöz, and T. Acar. “Approximation Properties of Multivariate Exponential Sampling Series”. Carpathian Mathematical Publications 13, no. 3 (December 7, 2021): 666–675. Accessed April 23, 2024. https://journals.pnu.edu.ua/index.php/cmp/article/view/5394.