TELAUMBANUA, S. I. J.; FEBRIAN, D. Comparison of Fuzzy Time Series Markov Chain and Fuzzy Time Series Lee in North Sumatra Import Value Forecasting. Numerical: Jurnal Matematika dan Pendidikan Matematika, [S. l.], v. 7, n. 1, p. 131–144, 2023. DOI: 10.25217/numerical.v7i1.2745. Disponível em: https://journal.iaimnumetrolampung.ac.id/index.php/numerical/article/view/2745. Acesso em: 6 jul. 2025.