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Author: Sopena, E.

• Hell, Pavol; Nešetřil, J.; Raspaud, A.; Sopena, E.: Three-and-more set theorems. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 41 (2000), issue 4, pp. 793-801
• Nešetřil, J.; Sopena, E.; Vignal, L.: $T$-preserving homomorphisms of oriented graphs. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 38 (1997), issue 1, pp. 125-136