Hidayat N, Krisnawati VH, Abusini S, Khairi DR. SMARTPHONE PURCHASING DECISION MAKING USING AN INTERVAL-VALUED INTUITIONISTIC FUZZY AHP APPROACH: A CASE STUDY IN MALANG CITY. BAREKENG: J. Math. & App. [Internet]. 26Jan.2026 [cited 28Jan.2026];20(2):1731–1742. Available from: https://ojs3.unpatti.ac.id/index.php/barekeng/article/view/21448