I. M. Pakaya, R. Radi, B. Purwantana, and A. Dharmawan, “Analysis of performance and roasting quality in a rotary cylinder-type coffee roasting machine”, J. Trop. AgriFood., vol. 7, no. 2, pp. 123–132, Jan. 2026, doi: 10.35941/jtaf.7.2.2025.21965.123-132.