Jurakhonov О. О.А. Jurakhonov The exact values of the upper bounds for approximation in the mean of some classes of Ьivariate functions bу triangular Fourier-Hermite sums . mathmc [Internet]. 2018 Mar. 30 [cited 2024 May 19];122(1):70-5. Available from: https://bulmathmc.enu.kz/index.php/main/article/view/19