%0 Journal Article %A V. V. Mazepus %T Collective excitations of finite fermi systems in the region of a~phase transition %J Teoretičeskaâ i matematičeskaâ fizika %D 1975 %P 406-411 %V 22 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1975_22_3_a11/ %G ru %F TMF_1975_22_3_a11