%0 Journal Article %A Romi Shamoyan %A Haiying Li %T On the action of differentiation operator in some classes of Nevanlinna-Djrbashian type in the unit disk and polydisk %J Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica %D 2010 %P 100-105 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/BASM_2010_1_a8/ %G en %F BASM_2010_1_a8