A. Jerves and  H. Ling and  J. Gabaldon and  M. Usoltceva and  C. Coust´e and  A. Agarwal and  R. Hurley and  J. Andrade,  A Simple Device for in-situ Direct Shear and Sinkage Tests.   journal   = {International Journal of Aerospace and Mechanical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2015, vol. 99(3). 492 - 497
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/10000825.