Jadwiga Królikowska and  Andrzej Królikowski and  Jarosław Bajer,  Systemic Approach to Risk Measurement of Drainage Systems in Urban Areas.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2014, vol. 91(7). 470 - 474
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/9998728.