TY  - JOUR
AU  - B. F. Bylov
AU  - È. A. Tikhonova
TI  - Exponents of certain second-order differential equations with piecewise-constant matrix
JO  - Differencialʹnye uravneniâ
PY  - 1986
SP  - 378
EP  - 389
VL  - 22
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1986_22_3_a1/
LA  - ru
ID  - DE_1986_22_3_a1
ER  -