@article{MZM_2016_99_2_a8,
     author = {K. A. Mirzoev and T. A. Safonova},
     title = {On the {Deficiency} {Index} of the {Vector-Valued} {Sturm--Liouville} {Operator}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {262--277},
     publisher = {mathdoc},
     volume = {99},
     number = {2},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2016_99_2_a8/}
}