@article{EMJ_2010_1_3_a1,
     author = {D. B. Bazarkhanov},
     title = {Estimates for the widths of classes of periodic functions of several {variables~--~I}},
     journal = {Eurasian mathematical journal},
     pages = {11--26},
     publisher = {mathdoc},
     volume = {1},
     number = {3},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EMJ_2010_1_3_a1/}
}