%0 Journal Article %A S. E. Pastukhova %T Some questions concerning the well-posedness of a mixed problem with an oblique derivative for a strictly hyperbolic operator %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1984 %P 38-42 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1984_4_a9/ %G ru %F VMUMM_1984_4_a9