@article{ZVMMF_2017_57_10_a0,
     author = {M. V. Abilov and M. K. Kerimov and E. V. Selimkhanov},
     title = {On some estimates for best approximations of bivariate functions by {Fourier{\textendash}Jacobi} sums in the mean},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1581--1599},
     year = {2017},
     volume = {57},
     number = {10},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2017_57_10_a0/}
}