“Various roasting characteristics against alteration of antioxidant activity, amino acids content, and flavor of Java Ijen-Raung coffee beans” (2023) Pelita Perkebunan (a Coffee and Cocoa Research Journal), 39(3), pp. 216–229. Available at: https://mail.ccrjournal.com/index.php/ccrj/article/view/563 (Accessed: 29 April 2026).