@article{MZM_1986_40_3_a5,
     author = {N. Ainulloev and L. V. Taikov},
     title = {Best approximation in the sense of {Kolmogorov} of classes of functions analytic in the unit disc},
     journal = {Matemati\v{c}eskie zametki},
     pages = {341--351},
     publisher = {mathdoc},
     volume = {40},
     number = {3},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1986_40_3_a5/}
}