%0 Journal Article %A Ron Kerman %A Luboš Pick %T Explicit formulas for optimal rearrangement-invariant norms in Sobolev imbedding inequalities %J Studia Mathematica %D 2011 %P 97-119 %V 206 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm206-2-1/ %R 10.4064/sm206-2-1 %G en %F 10_4064_sm206_2_1