Principal flat ideals in the ring of matrices over commutative elementary divisors domain von H. V. Zelisko

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On equivalence and factorization of the Kronecker product of matrices von V. R. Zelisko, H. V. Zelisko

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The standard form of matrices over the ring of Gaussian integers with respect to (z, k)-equivalence von V. M. Petrychkovych, H. V. Zelisko, N. B. Ladzoryshyn

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