Geodesic
How to characterize $(T+H)$-matrices and $(T+H)$-circulants
Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 55 (2015) no. 2, pp. 185-188

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Let $A$ be a given $n\times$ matrix. How to find out whether $A$ is a $(T+H)$-matrix? If the answer is positive, then, perhaps, $A$ is even a $(T+H)$-circulant? How then the circulant components of its $(T+H)$-decomposition can be found? Algorithmic answers are given to all these questions. 
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Kh. D. Ikramov; V. N. Chugunov. How to characterize $(T+H)$-matrices and $(T+H)$-circulants. Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 55 (2015) no. 2, pp. 185-188. http://geodesic.mathdoc.fr/item/ZVMMF_2015_55_2_a1/