Jasiński, Jakub, Claude Laflamme, Lionel Nguyen Van Thé, and Robert Woodrow. “Ramsey Precompact Expansions of Homogeneous Directed Graphs”. The Electronic Journal of Combinatorics 21, no. 4 (November 27, 2014): #P4.42. Accessed May 30, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v21i4p42.