Bérczi, Kristóf, Attila Bernáth, and Máté Vizer. “A Note on $\mathtt{V}$-Free 2-Matchings”. The Electronic Journal of Combinatorics 23, no. 4 (November 25, 2016): P4.27. Accessed March 29, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v23i4p27.