@article{DE_1985_21_12_a19,
     author = {Z. U. Blyagoz and G. D. Kretz},
     title = {A type of stability of phase systems with nonlinear modulated characteristic},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2166--2167},
     publisher = {mathdoc},
     volume = {21},
     number = {12},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1985_21_12_a19/}
}