Kano, Mikio, Saieed Akbari, Maryam Ghanbari, and Mohammad Javad Nikmehr. “The Chromatic Index of a Graph Whose Core Has Maximum Degree $2$”. The Electronic Journal of Combinatorics 19, no. 1 (March 19, 2012): P58. Accessed March 14, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v19i1p58.