%0 Journal Article %A E. Mitidieri %A S. I. Pohozaev %T Nonexistence of Weak Solutions for Some Degenerate and Singular Hyperbolic Problems on $\mathbb R_+^{n+1}$ %J Informatics and Automation %D 2001 %P 248-267 %V 232 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_2001_232_a20/ %G ru %F TRSPY_2001_232_a20