TONGRON, Y.; KOMATSU, T. Explicit Formulae for Some Sums of Trinomial Coefficients. Progress in Applied Science and Technology, Thailand, v. 10, n. 1, p. 161–169, 2020. DOI: 10.14456/10.14456/stj.2020.14. Disponível em: https://ph02.tci-thaijo.org/index.php/past/article/view/242916. Acesso em: 20 may. 2024.