%0 Journal Article %A A. V. Arkhangel'skii %T The principle of $\tau$-approximation and a test fo equality of dimension of compact Hausdorff spaces %J Doklady Akademii Nauk %D 1980 %P 777-780 %V 252 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1980_252_4_a0/ %G ru %F DAN_1980_252_4_a0