Lipi, Nowrose Jahan, et al. “Biochar-Assisted Nitrogen Reduction Improves Resource Efficiency at the Expense of Rice Yield”. SAINS TANAH - Journal of Soil Science and Agroclimatology, vol. 22, no. 2, Dec. 2025, pp. 479-88, https://doi.org/10.20961/stjssa.v22i2.102413.