Fox, Jacob, Zoe Himwich, Nitya Mani, and Yunkun Zhou. “A Note on Directed Analogues of the Sidorenko and Forcing Conjectures”. The Electronic Journal of Combinatorics 32, no. 3 (September 5, 2025): P3.38. Accessed March 30, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v32i3p38.