Kamarudin, A.F. (2019) “Evaluation of Steel Stairwell Dynamic Characteristics, Under Few Mass Configurations Using Ambient Vibration Method”, International Journal of Integrated Engineering, 11(6), pp. 224–235. Available at: https://journal.uthm.edu.my/index.php/ijie/article/view/4941 (Accessed: 7 August 2026).