%0 Journal Article %A Klaus-J. Engel %A Rainer Nagel %T Cauchy Problems for Polynomial Operator Matrices on Abstract Energy Spaces. %J Forum mathematicum %D 1990 %P 89-102 %V 2 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/FORUM_1990__2_3_141632/ %F FORUM_1990__2_3_141632