%0 Journal Article %A E. I. Ganzha %T The main series of nonhomogeneous systems of hydrodynamic type with constant matrices possessing $1^{st}$ order conservation laws %J Fundamentalʹnaâ i prikladnaâ matematika %D 1995 %P 641-648 %V 1 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/FPM_1995_1_3_a4/ %G ru %F FPM_1995_1_3_a4