TY  - JOUR
AU  - V. V. Filippov
TI  - On a theorem of Aronszajn
JO  - Differencialʹnye uravneniâ
PY  - 1997
SP  - 75
EP  - 79
VL  - 33
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1997_33_1_a10/
LA  - ru
ID  - DE_1997_33_1_a10
ER  -