TY  - JOUR
AU  - A. E. Gel'man
TI  - The approximate determination of periodic modes in high frequency processes
JO  - Differencialʹnye uravneniâ
PY  - 1968
SP  - 1396
EP  - 1403
VL  - 4
IS  - 8
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1968_4_8_a3/
LA  - ru
ID  - DE_1968_4_8_a3
ER  -