%0 Journal Article %A V. V. Pupyshev %T Effective-radius approximation in the~problem of two-dimensional scattering by a~central short-range potential %J Teoretičeskaâ i matematičeskaâ fizika %D 2015 %P 315-337 %V 182 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_2015_182_2_a7/ %G ru %F TMF_2015_182_2_a7