Sutoyo, Sutoyo, Siswoyo Siswoyo, Achmad Maududie, Ferry Wiranto, Muhamat Abdul Rohim, Riza Bahtiar Sulistyan, Yuliatin Azizah, Saiful Amin, Nurshadrina Kartika Sari, and Kahar Muzakhar. 2026. “Engineering Coffee Cherry Pulp-Derived Activated Carbon for Cellulase Immobilization and Its Role in Regulating Non-Sterile Coffee Fermentation”. Journal of Mathematical and Fundamental Sciences 58 (1):19-31. https://doi.org/10.5614/j.math.fund.sci.2026.58.1.2.