TY  - JOUR
AU  - A. V. Pokrovskii
AU  - M. A. Krasnosel'skii
TI  - Periodic oscillations in systems with relay nonlinearities
JO  - Doklady Akademii Nauk
PY  - 1974
SP  - 733
EP  - 736
VL  - 216
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1974_216_4_a6/
LA  - ru
ID  - DAN_1974_216_4_a6
ER  -