L. R. NASUTION, . Y. M. PERMATA, . J. M. KELIAT, M. A. T. PELAWI, V. K. CIUNARDY, and T. R. SERUNI, “FERMENTATION EFFECTS ON CAFFEINE CONTENT AND CHEMICAL PARAMETERS OF KOMBUCHA COFFEE CASCARA”, Int J App Pharm, vol. 16, no. 4, Aug. 2024.