%0 Journal Article
%A D. V. Lagno
%T A~characterization of the imaginary roots of hyperbolic Kac--Moody algebras
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1999
%P 636-637
%V 54
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1999_54_3_a9/
%G en
%F RM_1999_54_3_a9