Caro, Yair, and Adriana Hansberg. “Degrees in Oriented Hypergraphs and Ramsey P-Chromatic Number”. The Electronic Journal of Combinatorics 19, no. 3 (August 9, 2012): P16. Accessed April 4, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v19i3p16.