GITUNGA, Robert Muriungi; KOSKE K., Joseph; MUTISO M., Johnstonne. Applying the Polynomial Model in Simplex . International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 31, n. 1, p. 101–117, 2017. Disponível em: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/6676. Acesso em: 11 mar. 2026.