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Choudhury, PN and Kannan, MR (2021) Interval hulls of N-matrices and almost P-matrices. In: Linear Algebra and Its Applications, 617 . pp. 27-38.
Choudhury, PN and Kannan, MR and Khare, A (2021) Sign non-reversal property for totally non-negative and totally positive matrices, and testing total positivity of their interval hull. In: Bulletin of the London Mathematical Society, 53 (4). pp. 981-990.
Choudhury, PN and Kannan, MR and Sivakumar, AKC (2018) A note on linear preservers of semipositive and minimally semipositive matrices. In: Electronic Journal of Linear Algebra, 34 . pp. 687-694.