%0 Journal Article %A H. Hedenmalm %A N. A. Shirokov %T Keldysh--Lavrentiev counterexample and means of powers of conformal mapping. 1.~Construction of a~mapping %J Zapiski Nauchnykh Seminarov POMI %D 2011 %P 252-256 %V 389 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_2011_389_a13/ %G ru %F ZNSL_2011_389_a13