@article{MZM_1994_56_5_a6,
     author = {B. S. Kashin and V. N. Temlyakov},
     title = {On best $m$-term approximations and the entropy of sets in the space $L_1$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {57--86},
     publisher = {mathdoc},
     volume = {56},
     number = {5},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1994_56_5_a6/}
}