P. Prasannakumar and  L. Myoung Young and  G. Seung Kye and  P. Sang Hun and  S. Chul Gyu,  Improving the Optoacoustic Signal by Monitoring the Changes of Coupling Medium.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2019, vol. 146(2). 89 - 93
    [viewed 11 July 2020]. Available from: https://publications.waset.org/pdf/10010078.