TY  - JOUR
AU  - Grażyna Krech
TI  - The Voronovskaya type theorem for Poisson integrals of functions of two variables
JO  - Commentationes Mathematicae
PY  - 2013
SP  -  23
EP  - 34
VL  - 53
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.14708/cm.v53i1.770/
DO  - 10.14708/cm.v53i1.770
LA  - pl
ID  - 10_14708_cm_v53i1_770
ER  -