Valentika, Nina, I Made Sumertajaya, Aji Hamim Wigena, and Farit Mochamad Afendi. “Robust PCA-Based Multivariate Time Series Clustering for Weekly Indonesian Food Commodity Prices With Missing Data”. Statistics, Optimization & Information Computing 16, no. 3 (July 18, 2026): 1968–1983. Accessed September 26, 2026. https://iapress.org/index.php/soic/article/view/3618.