%0 Journal Article
%A A. M. Pyzh'yanov
%T Estimate of~the~perturbation of~the~eigenvalues of~a~two-particle Schr\"{o}dinger operator with a~hard-core potential
%J Teoretičeskaâ i matematičeskaâ fizika
%D 1971
%P 225-229
%V 6
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TMF_1971_6_2_a7/
%G ru
%F TMF_1971_6_2_a7