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• Volume 21

Author: Zelinka, Bohdan

• Zelinka, Bohdan: The group of autotopies of a digraph. (English). Czechoslovak Mathematical Journal, vol. 21 (1971), issue 4, pp. 619-624
• Zelinka, Bohdan: Groups and homogeneous graphs. (English). Czechoslovak Mathematical Journal, vol. 21 (1971), issue 4, pp. 653-660
• Zelinka, Bohdan: Homogeneous digraphs. (English). Czechoslovak Mathematical Journal, vol. 21 (1971), issue 2, pp. 280-290