WASET
    M. Watanabe and  T. Yamaguchi and  M. Sasajima and  Y. Kurosawa and  Y. Koike,  Examination of the Effect of Air Viscosity on Narrow Acoustic Tubes Using FEM Involving Complex Effective Density and Complex Bulk Modulus.   journal   = {International Journal of Bioengineering and Life Sciences}, [online]. World Academy of Science, Engineering and Technology.
    October 2013, vol. 83(11). 2265 - 2269
    [viewed 16 April 2024]. Available from: https://publications.waset.org/pdf/9996570.