TY  - JOUR
AU  - E. K. Makarov
TI  - On boundedness conditions for characteristic sets of solutions of linear multidimensional equations
JO  - Differencialʹnye uravneniâ
PY  - 1997
SP  - 653
EP  - 657
VL  - 33
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1997_33_5_a12/
LA  - ru
ID  - DE_1997_33_5_a12
ER  -