TY  - JOUR
AU  - È. I. Grudo
TI  - On the structure of the solutions of a periodic Pfaffian system with two purely imaginary roots in the characteristic equation
JO  - Differencialʹnye uravneniâ
PY  - 1989
SP  - 1867
EP  - 1872
VL  - 25
IS  - 11
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1989_25_11_a5/
LA  - ru
ID  - DE_1989_25_11_a5
ER  -