@article{TRSPY_2016_293_a1,
     author = {D. B. Bazarkhanov},
     title = {Nonlinear trigonometric approximations of multivariate function classes},
     journal = {Informatics and Automation},
     pages = {8--42},
     year = {2016},
     volume = {293},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2016_293_a1/}
}