%0 Journal Article %A S. P. Belinskii %A V. G. Romanov %T Determination of the coefficients of a $t$-hyperbolic system %J Matematičeskie zametki %D 1980 %P 525-532 %V 28 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1980_28_4_a4/ %G ru %F MZM_1980_28_4_a4