@article{SM_2019_210_10_a0,
     author = {R. R. Akopyan},
     title = {An analogue of the two-constants theorem and optimal recovery of analytic functions},
     journal = {Sbornik. Mathematics},
     pages = {1348--1360},
     publisher = {mathdoc},
     volume = {210},
     number = {10},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2019_210_10_a0/}
}