%0 Journal Article %A A. I. Parfenov %T A Discrete Norm on a~Lipschitz Surface and the~Sobolev Straightening of a~Boundary %J Matematičeskie trudy %D 2007 %P 163-186 %V 10 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MT_2007_10_2_a6/ %G ru %F MT_2007_10_2_a6