%0 Journal Article %A E. V. Ferapontov %T Equations of hydrodynamic type from the point of view of the theory of webs %J Matematičeskie zametki %D 1991 %P 97-108 %V 50 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1991_50_5_a13/ %G ru %F MZM_1991_50_5_a13