Nada, Fariz, and Ninuk Herlina. “Analysis of Drought Index and Its Relationship With Rose (Rosa sp.) Productivity in Batu City, East Java”. Jurnal Lahan Suboptimal : Journal of Suboptimal Lands 15, no. 2 (October 1, 2026): 154–159. Accessed October 23, 2026. https://jlsuboptimal.unsri.ac.id/index.php/jlso/article/view/822.