@article{DE_1975_11_9_a0,
     author = {R. T. Abramov and I. G. Egorov},
     title = {The stability in the large of the zero solution of a certain system of two differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1539--1549},
     publisher = {mathdoc},
     volume = {11},
     number = {9},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1975_11_9_a0/}
}