GINTING, R.; TIRTAYASA, A. M.; MALIK , A. F.; SILALAHI , R. QFD Phases I and II on Walking Aid Case Study. Journal of Industrial Engineering and Education, [S. l.], v. 2, n. 1, p. 62–69, 2024. Disponível em: https://jiee.bksti.org/index.php/iee/article/view/22. Acesso em: 17 jun. 2026.