Wassie Haile, Thongchai Mala, Yongyuth Osotsapar, and Visoot Verasan. “Screening of Ethiopian Traditional Medicinal Herbs for their Nitrification Inhibiting Ability”. Agriculture and Natural Resources 40, no. 1 (February 28, 2006): 74–82. accessed September 17, 2026. https://li01.tci-thaijo.org/index.php/anres/article/view/243507.