@article{PA_2011_18_a5,
     author = {R. F. Shamoyan and H. Li},
     title = {On characterizations of main parts of some meromorphic classes of area {Nevanlinna}  type in the unit disk},
     journal = {Problemy analiza},
     pages = {83--90},
     publisher = {mathdoc},
     number = {18},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PA_2011_18_a5/}
}