@article{SM_2010_201_12_a3,
     author = {Yu. M. Dyukarev},
     title = {Examples of block {Jacobi} matrices generating symmetric operators with arbitrary possible values of the deficiency numbers},
     journal = {Sbornik. Mathematics},
     pages = {1791--1800},
     publisher = {mathdoc},
     volume = {201},
     number = {12},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2010_201_12_a3/}
}