@article{DE_1999_35_8_a15,
     author = {A. M. Akhtyamov},
     title = {On the determination of a boundary condition from a finite set of eigenvalues},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1127--1128},
     publisher = {mathdoc},
     volume = {35},
     number = {8},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1999_35_8_a15/}
}