@article{MZM_2019_106_6_a13,
     author = {V. S. Budyka and M. M. Malamud},
     title = {On the {Deficiency} {Indices} of {Block} {Jacobi} {Matrices} {Related} to {Dirac} {Operators} with {Point} {Interactions}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {940--945},
     publisher = {mathdoc},
     volume = {106},
     number = {6},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2019_106_6_a13/}
}