@article{DE_1998_34_1_a6,
     author = {Yu. V. Pokorny and K. P. Lazarev and T. M. Gareeva},
     title = {On the spectral properties of some nonlocal boundary value problems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {45--49},
     publisher = {mathdoc},
     volume = {34},
     number = {1},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1998_34_1_a6/}
}