Competitively orientable complete multipartite graphs. - Myungho Choi; Minki Kwak; Suh-Ryung Kim (Discret. Math., 2022)

The triangle-free graphs that are competition graphs of multipartite tournaments. - Myungho Choi; Minki Kwak; Suh-Ryung Kim (Discuss. Math. Graph Theory, 2025)