SudadiU., RamadhanL. M. A. H., NugrohoB., and HartonoA., “Dynamics of Phosphorus Fractions and Chemical Properties of Paddy Soils as related to Paddy Rice Cropping Index and Irrigation Practices: Dinamika Fraksi Fosfor dan Sifat Kimia Tanah Sawah Terkait Indeks Pertanaman Padi Sawah dan Praktik Pengairan”, J. Il. Tan. Lingk., vol. 19, no. 1, pp. 19-25, Mar. 2019.