Darso, Muhammad, and Anton Yudhana. “Nitrogen Test Tool in Rice Leaves Based on Android Application”. Buletin Ilmiah Sarjana Teknik Elektro 3, no. 1 (February 27, 2021): 62–71. Accessed November 22, 2024. http://journal2.uad.ac.id/index.php/biste/article/view/3071.