Hwang, Kyung-Won, Naeem N. Sheikh, and Stephen G. Hartke. “A Note on Divisibility of the Number of Matchings of a Family of Graphs”. The Electronic Journal of Combinatorics 16, no. 1 (March 20, 2009): N10. Accessed March 16, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v16i1n10.