%0 Journal Article %A M. Sh. Shabozov %A D. K. Tukhliev %T On mean–square approximation of functions in Bergman space $B_2$ and value of widths of some classes of functions %J Ufa mathematical journal %D 2024 %P 66-75 %V 16 %N 2 %U http://geodesic.mathdoc.fr/item/UFA_2024_16_2_a4/ %G en %F UFA_2024_16_2_a4