@article{SM_2021_212_7_a1,
     author = {I. D. Kan},
     title = {A~strengthening of the {Bourgain-Kontorovich} method: three new theorems},
     journal = {Sbornik. Mathematics},
     pages = {921--964},
     publisher = {mathdoc},
     volume = {212},
     number = {7},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2021_212_7_a1/}
}