%0 Journal Article %A E. A. Utkina %T On a three-dimensional Goursat problem %J Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences %D 2001 %P 30-35 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/VSGTU_2001_12_a4/ %G ru %F VSGTU_2001_12_a4