Cameron, Peter J., Ashley Montanaro, Michael W. Newman, Simone Severini, and Andreas Winter. “On the Quantum Chromatic Number of a Graph”. The Electronic Journal of Combinatorics 14, no. 1 (November 28, 2007): R81. Accessed March 16, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v14i1r81.