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Borodin, O. V., Broersma, H. J., Glebov, A. and van den Heuvel, Jan ORCID: 0000-0003-0897-9148 (2004) A new upper bound on the cyclic chromatic number. CDAM research report series (LSE-CDAM-2004-04). Centre for Discrete and Applicable Mathematics, London School of Economics and Political Science, London, UK.