Deng, B., B. Bada, P. Tammeorg, J. Helenius, O. Luukkanen, and M. Starr. “Drought Stress and Acacia Seyal Biochar Effects on Sorghum Gas Exchange and Yield: A Greenhouse Experiment”. Agriculture and Natural Resources, vol. 53, no. 6, Dec. 2019, pp. 573–580, https://li01.tci-thaijo.org/index.php/anres/article/view/232629.