@misc{Romi_Shamoyan_On, author={Romi Shamoyan and Haiying Li}, howpublished={online}, publisher={National Academy of Sciences of Armenia}, abstract={We introduce new area Nevanlinna type spaces in the unit disk and polydisk and study the action of classical operator of differentiation on them. We substantially complement the list of previously known assertions of this type.}, type={Հոդված}, title={On the action of differentiation operator in some classes of Nevanlinna-Djrbashian type in the unit disk and polydisk}, keywords={Functions of a complex variable}, }