%0 Journal Article %A Leonid V. Kovalev %A Jani Onninen %T Variation of quasiconformal mappings on lines %J Studia Mathematica %D 2009 %P 257-274 %V 195 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm195-3-5/ %R 10.4064/sm195-3-5 %G en %F 10_4064_sm195_3_5