@article{BASM_2010_1_a8,
     author = {Romi Shamoyan and Haiying Li},
     title = {On the action of differentiation operator in some classes of {Nevanlinna-Djrbashian} type in the unit disk and polydisk},
     journal = {Buletinul Academiei de \c{S}tiin\c{t}e a Republicii Moldova. Matematica},
     pages = {100--105},
     year = {2010},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BASM_2010_1_a8/}
}