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Original Russian Text © B.Z. Shavarovskii, 2007, published in Doklady Akademii Nauk, 2007, Vol. 413, No. 6, pp. 738–742.
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Shavarovskii, B.Z. Classes of factorable and unfactorable polynomial matrices and their relative positions. Dokl. Math. 75, 318–321 (2007). https://doi.org/10.1134/S1064562407020378
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DOI: https://doi.org/10.1134/S1064562407020378