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van den Heuvel, Jan ORCID: 0000-0003-0897-9148, Král', Daniel, Kupec, Martin, Sereni, Jean-Sébastien and Volec, Jan (2014) Extensions of fractional precolorings show discontinuous behavior. Journal of Graph Theory, 77 (4). pp. 299-329. ISSN 0364-9024