TY  - JOUR
AU  - T. L. Surin
TI  - Exponents of regular Lappo--Danilevski{\v\i} systems
JO  - Differencialʹnye uravneniâ
PY  - 1989
SP  - 543
EP  - 545
VL  - 25
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1989_25_3_a27/
LA  - ru
ID  - DE_1989_25_3_a27
ER  -