%0 Journal Article %A Gesztesy, F. %A Grosse, H. %A Thaller, B. %T A rigorous approach to relativistic corrections of bound state energies for spin-1/2 particles %J Annales de l'I.H.P. Physique théorique %D 1984 %P 159-174 %V 40 %N 2 %I Gauthier-Villars %U http://archive.numdam.org/item/AIHPA_1984__40_2_159_0/ %G en %F AIHPA_1984__40_2_159_0