%0 Journal Article
%A V. D. Kukin
%A A. R. Frenkin
%T ``Ghost'' states and the condition of crossing symmetry
%J Doklady Akademii Nauk
%D 1960
%P 49-51
%V 133
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1960_133_1_a11/
%G ru
%F DAN_1960_133_1_a11