WASET
    J. Cwiklak and  M. Grzegorzewski and  M. Adamski ,  Threats and Preventive Methods to Avoid Bird Strikes at the Deblin Military Airfield, Poland.   journal   = {International Journal of Aerospace and Mechanical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2015, vol. 108(12). 2173 - 2179
    [viewed 18 April 2024]. Available from: https://publications.waset.org/pdf/10003626.