PIEJKO, Krzysztof; TROJNAR-SPELINA, Lucyna. On (k_1A_1, k_2A_2, k_3A_3)-edge colourings in graphs and generalized Jacobsthal numbers. Annales Mathematicae Silesianae, [S. l.], v. 39, n. 2, p. 331–348, 2025. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/18817. Acesso em: 24 dec. 2025.