TY  - JOUR
AU  - V. I. Ryazanov
TI  - Convergence of characteristics, the Fourier transformation, and
JO  - Doklady Akademii Nauk
PY  - 1993
SP  - 150
EP  - 152
VL  - 328
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1993_328_2_a5/
LA  - ru
ID  - DAN_1993_328_2_a5
ER  -