Laflamme, C., and K. Seyffarth. “Distinguishing Chromatic Numbers of Bipartite Graphs”. The Electronic Journal of Combinatorics 16, no. 1 (June 25, 2009): R76. Accessed March 16, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v16i1r76.