M. de Miguel Molina and  V. Santamarina Campos and  M. V. Segarra Oña and  B. de Miguel Molina,  Regulation, Co-Regulation and Self-Regulation of Civil Unmanned Aircrafts in Europe.   journal   = {International Journal of Law and Political Sciences}, [online]. World Academy of Science, Engineering and Technology.
    March 2018, vol. 137(5). 578 - 581
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10008841.