Characterization of finite simple semigroup digraphs von Meksawang, J., Panma, S., Knauer, U.

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About the spectra of a real nonnegative matrix and its signings von Attas, K., Boussaïri, A., Zaidi, M.

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Endomorphisms of Cayley digraphs of rectangular groups von Arworn, Srichan, Gyurov, Boyko, Nupo, Nuttawoot, Panma, Sayan

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