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Owiti S, Okelo B, Omoke P. On Certain Properties of Numerical Radius Preservers in Nonunital Banach Algebra. J. Nep. Math. Soc. [Internet]. 2025 Jun. 24 [cited 2025 Dec. 8];8(1):83-8. Available from: https://nepjol.info/index.php/jnms/article/view/80229