Lucchesi, Cláudio L., Marcelo H. de Carvalho, and U. S. R. Murty. “Thin Edges in Braces”. The Electronic Journal of Combinatorics 22, no. 4 (October 30, 2015): P4.14. Accessed March 27, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v22i4p14.