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Quality Improvement of Petroleum Products Using Fuzzy Control Charts. International Journal of Natural Sciences Research, [S. l.], v. 5, n. 1, p. 8–21, 2017. DOI: 10.18488/journal.63.2017.51.8.21. Disponível em: https://archive.conscientiabeam.com/index.php/63/article/view/2363. Acesso em: 5 aug. 2026.