%0 Journal Article %A B. P. Kufarev %T Estimates of Hausdorff measures under mappings of the type $W_p^1$ %J Doklady Akademii Nauk %D 1972 %P 288-291 %V 207 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1972_207_2_a9/ %G ru %F DAN_1972_207_2_a9