@article{FAA_2001_35_4_a4,
     author = {A. G. Kostyuchenko and K. A. Mirzoev},
     title = {Complete {Indefiniteness} {Tests} for {Jacobi} {Matrices} with {Matrix} {Entries}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {32--37},
     publisher = {mathdoc},
     volume = {35},
     number = {4},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_2001_35_4_a4/}
}