@article{SVMO_2017_19_1_a6,
     author = {S. S. Mamonov and A. O. Harlamova},
     title = {Determination of the conditions of existence of limit cycles of a first-order systems with cylindrical phase space},
     journal = {\v{Z}urnal Srednevol\v{z}skogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {67--76},
     publisher = {mathdoc},
     volume = {19},
     number = {1},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SVMO_2017_19_1_a6/}
}