@article{RM_1979_34_2_a18,
     author = {S. N. Olekhnik},
     title = {Properties of~solutions of~some systems of~differential equations},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {245--246},
     publisher = {mathdoc},
     volume = {34},
     number = {2},
     year = {1979},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1979_34_2_a18/}
}