%0 Journal Article %A B. S. Mityagin %T Relationship between the $\varepsilon$-entropy, approximation rate and nuclearity of a compactum in a linear space %J Doklady Akademii Nauk %D 1960 %P 765-768 %V 134 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1960_134_4_a5/ %G ru %F DAN_1960_134_4_a5