TOLENTINO, M. A. C.; EUGENIO, G. R. J. On the Set Chromatic Number of the Middle Graph of Extended Stars and Related Tree Families: Discrete and Computational Geometry, Graphs, and Games. Thai Journal of Mathematics, [S. l.], v. 21, n. 4, p. 835–853, 2023. Disponível em: https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/1549. Acesso em: 6 may. 2024.