%0 Journal Article
%A Sordoni, V.
%T Necessary and sufficient conditions for the well posedness of the Cauchy problem for a class of hyperbolic operators with high variable multiplicity
%J Rendiconti del Seminario Matematico della Università di Padova
%D 1992
%P 263-280
%V 88
%I Seminario Matematico of the University of Padua
%U http://www.numdam.org/item/RSMUP_1992__88__263_0/
%G en
%F RSMUP_1992__88__263_0