Hayashi, Yoshinori, Koji Masuda, and Shigeyuki Haruyama. 2024. “A Framework That Shows the Process to Help Customers Understand the Value at Each Stage of Product Development”. International Journal of Integrated Engineering 16 (2): 212-17. https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/16231.