@article{ZVMMF_1993_33_9_a1,
     author = {Yu. A. Kriksin},
     title = {Energy bounds of some nonlinear dynamical systems with an external action},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1275--1293},
     publisher = {mathdoc},
     volume = {33},
     number = {9},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1993_33_9_a1/}
}