Nurzati, S. A. A., D. Rhakasywi, and F. Fahrudin. “High Pressure and Long Compression Improve the Quality of Coffee Waste Biopellets : Tekanan Tinggi Dan Kompresi Lama Meningkatkan Kualitas Biopellet Limbah Kopi”. Indonesian Journal of Innovation Studies, vol. 26, no. 4, Oct. 2025, p. 10.21070/ijins.v26i4.1790, doi:10.21070/ijins.v26i4.1790.