%0 Journal Article %A S. V. Petras %T Decomposition of series of resonances on a “nonphysical” sheet %J Funkcionalʹnyj analiz i ego priloženiâ %D 1975 %P 89-90 %V 9 %N 2 %U http://geodesic.mathdoc.fr/item/FAA_1975_9_2_a22/ %G ru %F FAA_1975_9_2_a22