%0 Journal Article %A E. G. Emel'yanov %T Extremal decompositions of a~Riemann surface and quasiconformal mappings of a special type %J Zapiski Nauchnykh Seminarov POMI %D 1998 %P 108-115 %V 254 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1998_254_a6/ %G ru %F ZNSL_1998_254_a6