%0 Journal Article %A Z. I. Kozlova %T Certain applications of the principle of comparison of indices and the laws of separability of the space $J^{\omega_\nu}$ %J Doklady Akademii Nauk %D 1969 %P 1231-1233 %V 188 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1969_188_6_a7/ %G ru %F DAN_1969_188_6_a7