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Tame and wild matrix problems. (Russian) Zbl 0454.16014
Representations and quadratic forms, Collect. sci. Works, Kiev 1979, 39-74 (1979).

16Gxx Representation theory of associative rings and algebras
16H05 Separable algebras (e.g., quaternion algebras, Azumaya algebras, etc.)
16P10 Finite rings and finite-dimensional associative algebras
16P20 Artinian rings and modules (associative rings and algebras)
15A21 Canonical forms, reductions, classification