ZHOLTKEVICH, G. N.; NOVIKOV, B. V.; POLYAKOVA, L. Yu. Decomposition of Directed Graphs and the Turán Problem. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 66, n. 7, p. 958–969, 2014. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2191. Acesso em: 5 dec. 2025.