@article{MM_2006_18_5_a10,
     author = {A. A. Zaitsev and E. V. Zaitseva},
     title = {Integrable newtonian systems with nonpotential force fields},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {126--128},
     publisher = {mathdoc},
     volume = {18},
     number = {5},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_2006_18_5_a10/}
}