[1]
M. O. Akobirshoev and M. S. Shabozov, “On exact values of quasiwidths for some classes of differentiable periodic functions of two variables”, Ukr. Mat. Zhurn., vol. 61, no. 6, pp. 855–864, Jun. 2009, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/3063