Nurindriana, F. M., M. W. Lutfi, A. A. Hanuf, S. Soemarno, and S. Prijono. “Effects of ZnO-Based Smart Urea Coating on Ammonium Release and Characterization of Soil Ureolytic Bacteria in Loamy Soil”. Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering), vol. 15, no. 1, Feb. 2026, pp. 322-34, doi:10.23960/jtepl.v15i1.322-334.