Győri, Ervin, Addisu Paulos, Nika Salia, Casey Tompkins, and Oscar Zamora. “Generalized Planar Turán Numbers”. The Electronic Journal of Combinatorics 28, no. 4 (November 19, 2021): P4.32. Accessed March 29, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v28i4p32.