%0 Journal Article %A S. K. Godunov %T An interesting class of quasi-linear systems %J Doklady Akademii Nauk %D 1961 %P 521-523 %V 139 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_139_3_a0/ %G ru %F DAN_1961_139_3_a0