%0 Journal Article %A G. Sh. Dzhaparidze %A V. A. Petrov %T Deser--Gilbert--Sudarshan representation for fungtions with an isolated branch in the spectrum %J Teoretičeskaâ i matematičeskaâ fizika %D 1979 %P 137-139 %V 40 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1979_40_1_a13/ %G ru %F TMF_1979_40_1_a13