“EFFECT OF COMBINED BETWEEN MICROBUBBLE AND ULTRASONIC OF C-PHYCOCYANIN EXTRACTION FROM S. PLATENSIS”, INTERNATIONAL JOURNAL OF GEOMATE, vol. 18, no. 65, pp. 124–131, Jan. 2020, Accessed: May 24, 2026. [Online]. Available: https://geomatejournal.com/geomate/article/view/412