@article{AUM_2019_73_1_a6,
     author = {Obradovic, Milutin and Tuneski, Nikola},
     title = {Some properties of the class {\(\mathcal{U}\)}},
     journal = {Annales Universitatis Mariae Curie-Sk{\l}odowska. Mathematica },
     publisher = {mathdoc},
     volume = {73},
     number = {1},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUM_2019_73_1_a6/}
}