@article{DE_1988_24_2_a8,
     author = {Z. B. Tsalyuk},
     title = {Some methods for obtaining estimates for the solutions of inequalities},
     journal = {Differencialʹnye uravneni\^a},
     pages = {250--258},
     publisher = {mathdoc},
     volume = {24},
     number = {2},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1988_24_2_a8/}
}