%0 Journal Article %A A. S. Markus %T The problem of spectral synthesis for operators with point spectrum %J Izvestiya. Mathematics %D 1970 %P 670-696 %V 4 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1970_4_3_a10/ %G en %F IM2_1970_4_3_a10