%0 Journal Article %A A. V. Pereskokov %T Asymptotics of the spectrum and quantum averages of a~perturbed resonant oscillator near the boundaries of spectral clusters %J Izvestiya. Mathematics %D 2013 %P 163-210 %V 77 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_2013_77_1_a7/ %G en %F IM2_2013_77_1_a7