@article{RM_1987_42_4_a6,
     author = {A. I. Sargsyan},
     title = {On the basis property of the system of eigenvectors and associated vectors of the {Dirac} operator with a spectral parameter in the boundary conditions},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {145--146},
     publisher = {mathdoc},
     volume = {42},
     number = {4},
     year = {1987},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1987_42_4_a6/}
}