@article{SJIM_2005_8_3_a9,
     author = {L. I. Kononenko},
     title = {Conditions for existence of relaxation oscillations in singular systems of low dimension},
     journal = {Sibirskij \v{z}urnal industrialʹnoj matematiki},
     pages = {87--92},
     publisher = {mathdoc},
     volume = {8},
     number = {3},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJIM_2005_8_3_a9/}
}