@article{PA_2020_9_2_a0,
     author = {Rashid A. Aliev and Aynur N. Ahmadova},
     title = {Discrete {Ahlfors--Beurling} transform and its properties},
     journal = {Problemy analiza},
     pages = {3--15},
     publisher = {mathdoc},
     volume = {9},
     number = {2},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PA_2020_9_2_a0/}
}