%0 Journal Article %A B. Bojarski %T Pointwise Characterization of Sobolev Classes %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2006 %P 71-87 %V 255 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_2006_255_a5/ %G en %F TM_2006_255_a5