Triangular form of Laurent polynomial matrices and their factorization von M. I. Kuchma, A. I. Gatalevych

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Sums and products of units and idempotents in duo rings von A. I. Hatalevych, M. I. Kuchma

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On the existence of unique solutions of linear matrix equations over rings with involution von V. R. Zelisko, M. I. Kuchma

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Symmetric matrices and matrix equations over rings of quasipolynomials with involution von V. R. Zelisko, M. I. Kuchma

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Formulae of Weyl function using resolvent of the operator von H. V. Ivasyk, M. I. Kuchma

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