Cohen, Moshe, and Mina Teicher. “Kauffman’s Clock Lattice As a Graph of Perfect Matchings: A Formula for Its Height”. The Electronic Journal of Combinatorics 21, no. 4 (November 13, 2014): P4.31. Accessed March 27, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v21i4p31.