%0 Journal Article %A A. A. Dovgoshey %A O. Martio %T Mutually singular functions and computation of the lengths of curves %J Izvestiya. Mathematics %D 2006 %P 693-716 %V 70 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_2006_70_4_a2/ %G en %F IM2_2006_70_4_a2