Srisawat, P., Pengpajorn, N., Kittiban, S., Jakkujun, N., Piyarat, W., Thepsathorn, P., Tarateeraseth, V. and Witheephanich, K. 2017. The study of testing techniques for positioner of servo track writer. Asia-Pacific Journal of Science and Technology. 13, 3 (Apr. 2017), 323–328.