@article{TIMM_2016_22_4_a22,
     author = {S. A. Stasyuk},
     title = {Constructive sparse trigonometric approximations of functions with small mixed smoothness},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {247--253},
     publisher = {mathdoc},
     volume = {22},
     number = {4},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2016_22_4_a22/}
}