%0 Journal Article %A Borzymowski, Andrzej %A W. Michalski, Marek %T A nonlinear boundary value problem for a system of hyperbolic partial differential equations. %J Revista de la Real Academia de Ciencias Exactas, FĂ­sicas y Naturales %D 1988 %P 235-247 %V 82 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/RRACEFN_1988_1988_1_a20/ %G en %F RRACEFN_1988_1988_1_a20