@article{DE_1991_27_9_a18,
     author = {S. V. Volkov},
     title = {Construction of dynamical systems in three-dimensional space},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1633--1635},
     publisher = {mathdoc},
     volume = {27},
     number = {9},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1991_27_9_a18/}
}