%0 Journal Article %A V. G. Sheretov %T Functionals of Dirichlet type and harmonic quasi-conformal mappings %J Doklady Akademii Nauk %D 1973 %P 808-810 %V 209 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1973_209_4_a14/ %G ru %F DAN_1973_209_4_a14