Nurbekyan, A.R. “BOHR’S THEOREM FOR DOUBLE TRIGONOMETRIC INTERPOLATION POLYNOMIALS”. Proceedings of the YSU A: Physical and Mathematical Sciences 48, no. 2 (234) (July 10, 2014): 13–23. Accessed September 19, 2024. https://pub.ysu.am/index.php/proceedings-phys-math/article/view/vol48_no2_2014_pp013-023.