Ajavakom, N., Sripakagorn, P., Singhatanadgid, P., & Jintan, T. (2017). Research on acoustic noise in hard disk drive spindle motors at Chulalongkorn University. Asia-Pacific Journal of Science and Technology, 13(4), 409–415. retrieved from https://so01.tci-thaijo.org/index.php/APST/article/view/83698