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Křivka, Pavel
On homomorphism perfect graphs. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 12 (1971), issue 3, pp. 619-626
MSC: 05C20, 05C60, 05C99 | MR 0291023 | Zbl 0223.05128
References:
[1] Z. HEDRLÍN, A. PULTR: On rigid undirected graphs. Canad. J. Math. 18 (1966), 1237-1242. MR 0200193
[2] A. PULTR: Tensor products in the category of graphs. Comment. Math. Univ. Carolinae 11 (1970), 619-639. MR 0387373 | Zbl 0214.51102
[3] M. YOELI, A. GINZBURG: On homomorphic images of transition graphs. J. Franklin Institute 278 (1964), 291-296. MR 0167975 | Zbl 0192.07601
[4] Z. HEDRLÍN, P. GORALČÍK: O sdvigach pologrupp I. Periodičeskije i kvaziperiodičeskije preobrazovanija, Mat. časopis SAV 3 (1968), 161-176. MR 0238980
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