@article{DE_1994_30_11_a19,
     author = {Z. I. Ismailov},
     title = {Normal boundary value problems for a second-order equation with bounded operator potential},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2018--2019},
     publisher = {mathdoc},
     volume = {30},
     number = {11},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1994_30_11_a19/}
}