Hussain, Mohammed A., and Hussam M. A. MohamedSalih. “Vibration Measurement and Analysis Using Heterodyne Laser Detection”. Nahrain University College of Engineering Journal 10, no. 1 (March 3, 2007): 65–71. Accessed December 23, 2024. https://oldjournal.eng.nahrainuniv.edu.iq/index.php/main/article/view/487.