%0 Journal Article %A V. V. Pupyshev %T The~method of amplitude functions in two-dimensional scattering %J Teoretičeskaâ i matematičeskaâ fizika %D 2017 %P 34-62 %V 191 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_2017_191_1_a3/ %G ru %F TMF_2017_191_1_a3