Zahra, Aghietyas Choirun Az, Hendi Aviano Prasetyo, Jenny Rizkiana, Winny Wulandari, and Dwiwahju Sasongko. “Model Validation of Biomass-Coal Blends Co-Pyrolysis to Produce Hybrid Coal”. Indonesian Journal of Energy 2, no. 2 (August 30, 2019): 111–117. Accessed September 19, 2025. https://www.ije-pyc.org/IJE/article/view/41.