%0 Journal Article
%A E. V. Sallinen
%T Extremal problems on classes of quasi-conformal homeomorphisms
%J Sbornik. Mathematics
%D 1978
%P 99-109
%V 34
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1978_34_1_a3/
%G en
%F SM_1978_34_1_a3