@article{SM_1999_190_5_a3,
     author = {A. Yu. Popov},
     title = {Extremal problems in the~theory of analytic continuation},
     journal = {Sbornik. Mathematics},
     pages = {737--761},
     publisher = {mathdoc},
     volume = {190},
     number = {5},
     year = {1999},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1999_190_5_a3/}
}