ENGELS, Christian. Dichotomy Theorems for Homomorphism Polynomials of Graph Classes. Journal of Graph Algorithms and Applications, [S. l.], v. 20, n. 1, p. 3–22, 2016. DOI: 10.7155/jgaa.00382. Disponível em: https://jgaa.info/index.php/jgaa/article/view/paper382. Acesso em: 30 jun. 2024.