Aboulker P, Aubian G, Charbit P, Thomassé S. ($\overrightarrow{P_6}$, triangle)-Free Digraphs Have Bounded Dichromatic Number. Electron. J. Combin. [Internet]. 2024Dec.17 [cited 2026Mar.29];31(4):P4.60. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v31i4p60