Geodesic
On conjugate-normal $(T+H)$-circulants and skew-circulants
Zapiski Nauchnykh Seminarov POMI, Computational methods and algorithms. Part XXIII, Tome 382 (2010), pp. 60-70 Cet article a éte moissonné depuis la source Math-Net.Ru

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A matrix $A$ is called a $(T+H)$-circulant (skew-circulant) if $A$ can be represented as a sum of a conventional (that is, Toeplitz) and a ankel circulants (respectively, skew-circulants). A complete description of the sets of conjugate-normal $(T+H)$-circulants and skew-circulants is given. Bibl. 3 titles. 
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Kh. D. Ikramov; V. N. Chugunov. On conjugate-normal $(T+H)$-circulants and skew-circulants. Zapiski Nauchnykh Seminarov POMI, Computational methods and algorithms. Part XXIII, Tome 382 (2010), pp. 60-70. http://geodesic.mathdoc.fr/item/ZNSL_2010_382_a5/

[1] V. N. Chugunov, Kh. D. Ikramov, “The conjugate-normal Toeplitz problem”, Linear Algebra Appl., 430 (2009), 2467–2473 | DOI | MR | Zbl

[2] Kh. D. Ikramov, V. N. Chugunov, “O teplitsevykh matritsakh, yavlyayuschikhsya odnovremenno normalnymi i sopryazhenno-normalnymi”, Zap. nauchn. semin. POMI, 367, 2009, 67–74

[3] V. N. Chugunov, Kh. D. Ikramov, “A contribution to the normal Hankel problem”, Linear Algebra Appl., 430 (2009), 2094–2101 | DOI | MR | Zbl