TY  - JOUR
AU  - N. I. Shkil'
TI  - Periodic solutions of systems of linear differential equations with slowly varying coefficients
JO  - Izvestiâ vysših učebnyh zavedenij. Matematika
PY  - 1976
SP  - 79
EP  - 91
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IVM_1976_2_a10/
LA  - ru
ID  - IVM_1976_2_a10
ER  -