[1]
A. Muttaqin, S. P. Sakti, A. Naba, and P. Mudjirahardjo, “Quartz Crystal Microbalance (QCM) Sensor Array with Varying PMMA Coatings for Coffee Roasting Aroma Monitoring”, IJEEI, vol. 14, no. 1, pp. 153–166, Mar. 2026, doi: 10.52549/ijeei.v14i1.7760.