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• Volume 48

Author: Erdös, P. L.

• Duffus, D.; Erdös, P. L.; Nešetřil, J.; Soukup, L.: Antichains in the homomorphism order of graphs. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 48 (2007), issue 4, pp. 571-583