@article{ZVMMF_1999_39_3_a1,
     author = {Kh. D. Ikramov and N. V. Savel'eva},
     title = {Computer algebra procedures for verifying the definiteness of a matrix on a subspace},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {357--370},
     publisher = {mathdoc},
     volume = {39},
     number = {3},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1999_39_3_a1/}
}