%0 Journal Article %A V. V. Kozlov %A E. M. Nikishin %T A relativistic variant of the Hamiltonian formalism and wave functions of the hydrogen atom %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1986 %P 11-20 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1986_5_a2/ %G ru %F VMUMM_1986_5_a2