@article{FAA_1999_33_1_a2,
     author = {A. G. Kostyuchenko and K. A. Mirzoev},
     title = {Generalized {Jacobi} {Matrices} and {Deficiency} {Numbers} of {Ordinary} {Differential} {Operators} with {Polynomial} {Coefficients}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {30--45},
     publisher = {mathdoc},
     volume = {33},
     number = {1},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1999_33_1_a2/}
}