@article{ZVMMF_2015_55_7_a1,
     author = {V. A. Abilov and M. V. Abilov and M. K. Kerimov},
     title = {Sharp estimates for the rate of convergence of double {Fourier} series in classical orthogonal polynomials},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1109--1117},
     publisher = {mathdoc},
     volume = {55},
     number = {7},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2015_55_7_a1/}
}