WASET
    J. Madureira and  R. Lagido and  I. Sousa ,  Comparison of Number of Waves Surfed and Duration Using Global Positioning System and Inertial Sensors .   journal   = {International Journal of Biomedical and Biological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2015, vol. 101(5). 444 - 448
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10001735.