Hou, Jianfeng, Heng Li, and Qinghou Zeng. “Extremal Graphs for the Suspension of Edge-Critical Graphs”. The Electronic Journal of Combinatorics 31, no. 4 (November 29, 2024): #P4.55. Accessed May 28, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v31i4p55.