@article{MZM_2011_90_3_a5,
     author = {V. V. Lebedev},
     title = {Estimates in {Beurling--Helson} {Type} {Theorems:} {Multidimensional} {Case}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {394--407},
     publisher = {mathdoc},
     volume = {90},
     number = {3},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2011_90_3_a5/}
}