@article{SM_1976_29_2_a4,
     author = {V. M. Bruk},
     title = {On a~class of boundary value problems with spectral parameter in the boundary condition},
     journal = {Sbornik. Mathematics},
     pages = {186--192},
     publisher = {mathdoc},
     volume = {29},
     number = {2},
     year = {1976},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1976_29_2_a4/}
}