BARISH, R. D. On the Number of $k$-Proper Connected Edge and Vertex Colorings of Graphs: Discrete and Computational Geometry, Graphs, and Games. Thai Journal of Mathematics, [S. l.], v. 21, n. 4, p. 917–936, 2023. Disponível em: https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/1556. Acesso em: 5 may. 2024.