@article{DE_1997_33_5_a23,
     author = {M. V. Strekopytova},
     title = {Investigation of a linear system on a plane},
     journal = {Differencialʹnye uravneni\^a},
     pages = {709--711},
     publisher = {mathdoc},
     volume = {33},
     number = {5},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1997_33_5_a23/}
}