@article{DAN_1957_112_5_a3,
     author = {M. S. Brodskii},
     title = {The inverse of a problem for systems of linear differential equations involving a parameter},
     journal = {Doklady Akademii Nauk},
     pages = {800--803},
     year = {1957},
     volume = {112},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_112_5_a3/}
}