Dini, Karina, 		Fitrah, Evelin, AND 		Rozi, Fachrur.
" Implementation of Generalized Variance and T2- Hotelling Control Charts for Monitoring the Water Quality Characteristics at the Perumda Air Minum Tugu Tirta Kota Malang" <em>Proceedings of the International Conference on Green Technology</em> [Online], Volume 15 Number 1 (12 March 2026)