FENG, S.; MO, J. P. Sum Standard Deviation of Frequency – A Context Independent Machine Condition Trend Indicator. Digital Manufacturing Technology, Singapore, v. 3, n. 2, p. 230–249, 2023. DOI: 10.37256/dmt.3220233254. Disponível em: https://ojs.wiserpub.com/index.php/DMT/article/view/3254. Acesso em: 23 jul. 2024.