@article{DE_1974_10_1_a10,
     author = {M. Meredov},
     title = {The unique solvability of the {Darboux} problem for a certain degenerate system},
     journal = {Differencialʹnye uravneni\^a},
     pages = {89--99},
     publisher = {mathdoc},
     volume = {10},
     number = {1},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1974_10_1_a10/}
}