TY  - JOUR
AU  - Yu. E. Anikonov
TI  - Formulas in inverse problems for second-order equations
JO  - Doklady Akademii Nauk
PY  - 1991
SP  - 848
EP  - 850
VL  - 320
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1991_320_4_a17/
LA  - ru
ID  - DAN_1991_320_4_a17
ER  -