@article{CHEB_2019_20_2_a26,
     author = {M. Sh. Shabozov and M. O. Akobirshoev},
     title = {About {Kolmogorov} type of inequalities for periodic functions of two variables in $L_2$},
     journal = {\v{C}eby\v{s}evskij sbornik},
     pages = {348--365},
     publisher = {mathdoc},
     volume = {20},
     number = {2},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CHEB_2019_20_2_a26/}
}