Utomo TP, Hasanudin U, Hidayati S, Widaputri S. Pemanfaatan ampas batang kelapa sawit tua bebas nira sebagai bahan baku biopelet [Utilization of sap free old palm dregs as raw material for biopellets]. JTIHP [Internet]. 2024Apr.30 [cited 2025Dec.11];29(1):100-8. Available from: https://jurnal.fp.unila.ac.id/index.php/JTHP/article/view/8544