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• Volume 49

Author: Kepka, Tomáš

• Cho, Jung R.; Ježek, Jaroslav; Kepka, Tomáš: Paramedial groupoids. (English). Czechoslovak Mathematical Journal, vol. 49 (1999), issue 2, pp. 277-290
• Cho, Jung R.; Ježek, Jaroslav; Kepka, Tomáš: Simple paramedial groupoids. (English). Czechoslovak Mathematical Journal, vol. 49 (1999), issue 2, pp. 391-399