@article{TIMM_2015_21_4_a0,
     author = {G. A. Akishev},
     title = {Estimates for {Kolmogorov} widths of the {Nikol'skii} {\textemdash} {Besov} {\textemdash} {Amanov} classes in the {Lorentz} space},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {3--13},
     year = {2015},
     volume = {21},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2015_21_4_a0/}
}