R. Radin, R. Abu Bakar, C. Fauziah Ishak, S. Hajar Ahmad, and L. Chin Tsong, “Biochar‑compost mixture as amendment for improvementof polybag‑growing media and oil palm seedlings at main nurserystage”, Int. J. Recycl. Org. Waste Agric., vol. 7, no. 1, Nov. 2017, doi: 10.1007/s40093-017-0185-3.