Hongmao Zhu and Jun Chu and Lei Shen and Zhihua Luo, Frequency and Amplitude Measurement of a Vibrating Object in Water Using Ultrasonic Speckle Technique. journal = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology. October 2012, vol. 70(10). 2273 - 2275 [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/3085.