NENOV, N. ON A CLASS OF VERTEX FOLKMAN GRAPHS. Ann. Sofia Univ. Fac. Math. and Inf., [S. l.], v. 94, p. 15–25, 2002. Disponível em: https://annual.uni-sofia.bg/index.php/fmi/article/view/186. Acesso em: 22 nov. 2024.