@article{DE_1975_11_11_a18,
     author = {Yu. I. Domshlak},
     title = {The oscillation on a finite time interval of the projections of the solutions of systems of ordinary differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2089--2091},
     publisher = {mathdoc},
     volume = {11},
     number = {11},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1975_11_11_a18/}
}