%0 Journal Article %A P. S. Kireev %T The fine structure and Lamb's shift of the $2s_{1/2}$ level for $T_\alpha$ tritium line $\lambda$ 6560 $\mathring A$ %J Doklady Akademii Nauk %D 1957 %P 41-44 %V 112 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1957_112_1_a9/ %G ru %F DAN_1957_112_1_a9