KHADSHIIVANOV, N.; PASHOV, I. Ramsey multiplicity M(3,6) is 2. Ann. Sofia Univ. Fac. Math. and Inf., [S. l.], v. 83, n. 1, p. 17–28, 1992. Disponível em: https://stipendii.uni-sofia.bg/index.php/fmi/article/view/480. Acesso em: 5 dec. 2024.