%0 Journal Article
%A V. N. Kapshai
%A M. S. Danilchenko
%A Yu. A. Grishechkin
%T Covariant equations and resonance states of two-particle systems with $\delta$-function potentials
%J Problemy fiziki, matematiki i tehniki
%D 2015
%P 11-15
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PFMT_2015_1_a1/
%G ru
%F PFMT_2015_1_a1