@article{DE_1997_33_5_a11,
     author = {I. T. Kiguradze},
     title = {On systems of ordinary differential equations and differential inequalities with multipoint boundary conditions},
     journal = {Differencialʹnye uravneni\^a},
     pages = {646--652},
     publisher = {mathdoc},
     volume = {33},
     number = {5},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1997_33_5_a11/}
}