%0 Journal Article %A S. V. Khabirov %T Optimal system for the sum of two ideals admitted by the hydrodynamic type equations %J Ufa mathematical journal %D 2014 %P 97-101 %V 6 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/UFA_2014_6_2_a6/ %G en %F UFA_2014_6_2_a6