Bender, Edward A., and E. Rodney Canfield. “Locally Restricted Compositions III. Adjacent-Part Periodic Inequalities”. The Electronic Journal of Combinatorics 17, no. 1 (October 29, 2010): R145. Accessed March 30, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v17i1r145.