%0 Journal Article %A S. Yu. Graf %T The Schwarzian derivatives of harmonic functions and univalence conditions %J Problemy analiza %D 2017 %P 42-56 %V 6 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/PA_2017_6_2_a2/ %G en %F PA_2017_6_2_a2