Author: Song, Seok-Zun

Song, Seok-Zun; Kang, Kyung-Tae; Jun, Young-Bae: Invertible commutativity preservers of matrices over max algebra. (English). Czechoslovak Mathematical Journal, vol. 56 (2006), issue 4, pp. 1185-1192
Song, Seok-Zun; Kang, Kyung-Tae; Jun, Young-Bae: Perimeter preserver of matrices over semifields. (English). Czechoslovak Mathematical Journal, vol. 56 (2006), issue 2, pp. 515-524

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