%0 Journal Article %A V. N. Kapshai %A K. P. Shilyaeva %A Yu. A. Grishechkin %T Resonance states of relativistic systems and covariant two-particle equations %J Problemy fiziki, matematiki i tehniki %D 2011 %P 33-37 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/PFMT_2011_4_a6/ %G en %F PFMT_2011_4_a6