@article{DE_1970_6_3_a12,
     author = {V. V. Barkovskii},
     title = {Selfadjointness of operators that are generated by the {Schr\"odinger} equation and by inhomogeneous boundary conditions on a part of the boundary},
     journal = {Differencialʹnye uravneni\^a},
     pages = {513--524},
     publisher = {mathdoc},
     volume = {6},
     number = {3},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1970_6_3_a12/}
}