TY  - JOUR
AU  - N. N. Vakhania
TI  - A boundary problem for a hyperbolic system equivalent to the string vibration equation
JO  - Doklady Akademii Nauk
PY  - 1957
SP  - 906
EP  - 909
VL  - 116
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1957_116_6_a1/
LA  - ru
ID  - DAN_1957_116_6_a1
ER  -