TY  - JOUR
AU  - V. A. Sharafutdinov
TI  - Quasi-isotropic approximation of geometric optics, and tomography
JO  - Doklady Akademii Nauk
PY  - 1992
SP  - 847
EP  - 850
VL  - 323
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1992_323_5_a9/
LA  - ru
ID  - DAN_1992_323_5_a9
ER  -