Pratama, M. G. P. P., Muksin, M., Wijaya, Y. G., & Syah, A. H. N. (2022). Frequency Mapping of Square Head Expander for Vibration Testing. Indonesian Journal of Aerospace, 20(1), 1–8. https://doi.org/10.30536/j.jtd.2022.v20.a3709