Kumoro, Chowal Jundy, Lambok Rommy Sulaeman, Gredinov Sumanta Malsad, and Mochamad Arya Maulana. “How Modified BCG Matrix-Based Product Portfolio Optimization Changes Consumer Purchase Behavior: Evidence from Vending Machine Transactions”. International Journal of Management Science and Information Technology 6, no. 2 (August 21, 2026): 1914–1927. Accessed August 26, 2026. https://journal.lembagakita.com/ijmsit/article/view/8278.