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://ftl5.uni-sofia.bg./index.php/fmi/article/view/186. Acesso em: 3 apr. 2025.