WASET
    M. Watanabe and  T. Yamaguchi and  M. Sasajima and  Y. Kurosawa and  Y. Koike,  Theoretical Analysis of Damping Due to Air Viscosity in Narrow Acoustic Tubes.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2013, vol. 78(6). 679 - 683
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/15236.