%0 Journal Article %A L. I. Podlubnyi %T Variational calculation of atom and ion energy in plasma %J Doklady Akademii Nauk %D 1975 %P 1056-1058 %V 224 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1975_224_5_a17/ %G ru %F DAN_1975_224_5_a17