Kumoro CJ, Sulaeman LR, Malsad GS, Maulana MA. How Modified BCG Matrix-Based Product Portfolio Optimization Changes Consumer Purchase Behavior: Evidence from Vending Machine Transactions. Int. J. Manag. Sci. Inf. Technol. [Internet]. 2026 Aug. 21 [cited 2026 Aug. 26];6(2):1914-27. Available from: https://journal.lembagakita.com/ijmsit/article/view/8278