@article{MZM_2006_80_4_a18,
     author = {E. M. Skorikov},
     title = {Information {Kolmogorov} width for the intersection of {Sobolev} classes},
     journal = {Matemati\v{c}eskie zametki},
     pages = {638--640},
     publisher = {mathdoc},
     volume = {80},
     number = {4},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2006_80_4_a18/}
}