WASET
    K. Tadjer and  M. Bensaibi and  A. Chaid,  Vulnerability Assessment of Blida City.   journal   = {International Journal of Geological and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2013, vol. 78(6). 354 - 358
    [viewed 09 May 2024]. Available from: https://publications.waset.org/pdf/6771.