TY  - JOUR
AU  - V. Ya. Ivriǐ
TI  - Propagation of singularities of solutions of nonclassical boundary value problems for second-order hyperbolic equations
JO  - Trudy Moskovskogo matematičeskogo obŝestva
PY  - 1981
SP  - 81
EP  - 91
VL  - 43
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MMO_1981_43_a2/
LA  - ru
ID  - MMO_1981_43_a2
ER  -