%0 Journal Article %A Jarosław L. Bojarski %T Regularity of displacement solutions in Hencky plasticity. I: The extremal relation %J Applicationes Mathematicae %D 2011 %P 259-293 %V 38 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/am38-3-2/ %R 10.4064/am38-3-2 %G en %F 10_4064_am38_3_2