@article{PA_2018_7_1_a8,
     author = {V. V. Volchkov and Vit. V. Volchkov},
     title = {A new characterization of holomorphic functions in the unit disk},
     journal = {Problemy analiza},
     pages = {134--147},
     publisher = {mathdoc},
     volume = {7},
     number = {1},
     year = {2018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PA_2018_7_1_a8/}
}