@article{DAN_1960_134_4_a5,
     author = {B. S. Mityagin},
     title = {Relationship between the $\varepsilon$-entropy, approximation rate and nuclearity of a compactum in a linear space},
     journal = {Doklady Akademii Nauk},
     pages = {765--768},
     publisher = {mathdoc},
     volume = {134},
     number = {4},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_134_4_a5/}
}