TY  - JOUR
AU  - O. A. Oleinik
AU  - E. V. Radkevich
TI  - Analyticity of solutions of linear differential equations and systems
JO  - Doklady Akademii Nauk
PY  - 1972
SP  - 785
EP  - 788
VL  - 207
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1972_207_4_a4/
LA  - ru
ID  - DAN_1972_207_4_a4
ER  -