@article{DE_1987_23_5_a19,
     author = {S. S. Belyavsky},
     title = {An estimate for the difference of the solutions of two holomorphic systems of differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {882--884},
     publisher = {mathdoc},
     volume = {23},
     number = {5},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1987_23_5_a19/}
}