@article{SM_2021_212_9_a7,
     author = {B. M. Bekker and Yu. G. Zarhin},
     title = {Letter to the editors},
     journal = {Sbornik. Mathematics},
     publisher = {mathdoc},
     volume = {212},
     number = {9},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SM_2021_212_9_a7/}
}