Pekárek, Jakub, Jean-Sébastien Sereni, and Zelealem B. Yilma. “The Minimum Number of Spanning Trees in Regular Multigraphs”. The Electronic Journal of Combinatorics 29, no. 4 (November 18, 2022): P4.29. Accessed March 29, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v29i4p29.