%0 Journal Article %A S.L. Krushkal' %T Quasiconformal extremals of non-regular functionals %J Annales Fennici Mathematici %D 1992 %P 295-306 %V 17 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1992.1728/ %R 10.5186/aasfm.1992.1728 %G en %F AFM_1992_17_2_a9