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Translated from Itogi Nauki i Tekhniki, Seriya Sovremennaya Matematika i Ee Prilozheniya, Tematicheskie Obzory. Vol. 52, Algebra-9, 1998.
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Ikramov, K.D., Savel'eva, N.V. Conditionally definite matrices. J Math Sci 98, 1–50 (2000). https://doi.org/10.1007/BF02355379
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DOI: https://doi.org/10.1007/BF02355379