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Choudhury, Projesh Nath and Sivakumar, KC (2019) Matrices with positive semidefinite real part. In: LINEAR & MULTILINEAR ALGEBRA .
Choudhury, Projesh Nath and Kannan, Rajesh M and Sivakumar, KC (2018) A NOTE ON LINEAR PRESERVERS OF SEMIPOSITIVE AND MINIMALLY SEMIPOSITIVE MATRICES. In: ELECTRONIC JOURNAL OF LINEAR ALGEBRA, 34 . pp. 687-694.