%0 Journal Article
%A Grażyna Krech
%T The Voronovskaya type theorem for Poisson integrals of functions of two variables
%J Commentationes Mathematicae
%D 2013
%P  23-34
%V 53
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.14708/cm.v53i1.770/
%R 10.14708/cm.v53i1.770
%G pl
%F 10_14708_cm_v53i1_770