@article{DE_2001_37_11_a0,
     author = {H. A. Van den Berg and Yu. N. Kiselev and M. V. Orlov},
     title = {Analysis of {Trajectories} of a {Nonlinear} {System} of {Differential} {Equations}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1443--1452},
     publisher = {mathdoc},
     volume = {37},
     number = {11},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2001_37_11_a0/}
}