TY  - JOUR
AU  - V. N. Gol'dberg
TI  - The occurrence of discontinuities which arise when extending solutions of nonlinear mixed problems for the string equation
JO  - Doklady Akademii Nauk
PY  - 1967
SP  - 1229
EP  - 1232
VL  - 176
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1967_176_6_a4/
LA  - ru
ID  - DAN_1967_176_6_a4
ER  -