%0 Journal Article %A G. M. Zhislin %T Spectrum of the energy operator of molecule type systems on spaces of functions with given symmetry %J Doklady Akademii Nauk %D 1967 %P 521-524 %V 175 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1967_175_3_a3/ %G ru %F DAN_1967_175_3_a3