Czabarka, Éva, Johannes Rauh, Kayvan Sadeghi, Taylor Short, and László Székely. “On the Number of Non-Zero Elements of Joint Degree Vectors”. The Electronic Journal of Combinatorics 24, no. 1 (March 31, 2017): #P1.55. Accessed June 6, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v24i1p55.