@article{DE_1992_28_10_a20,
     author = {V. A. Mikhailets},
     title = {Selfadjoint problems with a given eigenvalue distribution},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1834--1835},
     publisher = {mathdoc},
     volume = {28},
     number = {10},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1992_28_10_a20/}
}