@article{DE_1997_33_8_a3,
     author = {T. A. Mel'nik and V. A. Plotnikov},
     title = {A generalization of a theorem of {A.} {N.} {Tikhonov} for quasidifferential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1030--1034},
     publisher = {mathdoc},
     volume = {33},
     number = {8},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1997_33_8_a3/}
}