%0 Journal Article %A S. A. Sayganova %T On the problem with M.~Saigo operators on characteristics for a~degenerative hyperbolic equation %J Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ %D 2010 %P 69-77 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/VSGU_2010_6_a7/ %G ru %F VSGU_2010_6_a7