Y. Adi Saputra, D. Murdiyanto, and B. Crisanto Putra Mbulu, “CHARACTERISTICS OF BRIQUETTES FROM COFFEE TREE TRUNK CHARCOAL POWDER: INFLUENCE OF DRYING TEMPERATURE ON BURNING RATE AND CALORIFIC VALUE”, METAL, vol. 4, no. 1, pp. 12–20, Jun. 2026.