Nitipan Vittayaphadung และ Pruittikorn Smithmaitrie. (2012) Effects of vibration on the off-track positioning of the piezoelectric head gimbal assembly in hard disk drive. <i>KKU Engineering Journal</i>, <i>39</i>(1), 1-10.Nitipan Vittayaphadung และ Pruittikorn Smithmaitrie. "Effects of vibration on the off-track positioning of the piezoelectric head gimbal assembly in hard disk drive". KKU Engineering Journal 39 (2012):1-10.Nitipan Vittayaphadung และ Pruittikorn Smithmaitrie. Effects of vibration on the off-track positioning of the piezoelectric head gimbal assembly in hard disk drive. Faculty of Engineering, Khon Kaen Univeristy:ม.ป.ท. 2012.