Oliveira da Silva, Alberto, and Adelaide Freitas. “Time Series Components Separation Based on Singular Spectral Analysis Visualization: An HJ-Biplot Method Application”. Statistics, Optimization & Information Computing 8, no. 2 (May 18, 2020): 346-358. Accessed March 29, 2024. http://www.iapress.org/index.php/soic/article/view/897.