@article{DE_1973_9_2_a28,
     author = {S. \`E. Cheran},
     title = {Limit positions of osculating planes of the trajectories of linear systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {386--388},
     publisher = {mathdoc},
     volume = {9},
     number = {2},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1973_9_2_a28/}
}