%0 Journal Article %A S. Varbanets %A Ya. Vorobyov %T Norm of Gaussian integers in arithmetical progressions and narrow sectors %J Algebra and discrete mathematics %D 2020 %P 259-270 %V 29 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/ADM_2020_29_2_a10/ %G en %F ADM_2020_29_2_a10