TY  - JOUR
AU  - N. S. Berezkina
TI  - On the connection between third-order systems with no moving critical points and the sine-Gordon equation
JO  - Differencialʹnye uravneniâ
PY  - 1987
SP  - 707
EP  - 708
VL  - 23
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1987_23_4_a17/
LA  - ru
ID  - DE_1987_23_4_a17
ER  -