Y. Hayashi, K. Masuda, and S. Haruyama, “A Framework That Shows the Process to Help Customers Understand the Value at Each Stage of Product Development”, ijie, vol. 16, no. 2, pp. 212–217, May 2024, Accessed: Jun. 30, 2024. [Online]. Available: https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/16231