@article{DE_1990_26_9_a22,
     author = {M. S. Eremin},
     title = {An inverse problem of spectral analysis on a half-line for a differential equation in a certain class},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1638--1640},
     publisher = {mathdoc},
     volume = {26},
     number = {9},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1990_26_9_a22/}
}