WASET
    Roland Pusch and  Richard Weston,  Impact of Scale on Rock Strength.   journal   = {International Journal of Geotechnical and Geological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2012, vol. 68(8). 1577 - 1582
    [viewed 28 March 2024]. Available from: https://publications.waset.org/pdf/1445.