Fellner, A., and R. Fellner. “Navigation Preparation of Unmanned Aircraft Systems for the Operational Activities of Volunteer Fire Services – Selected Examples”. Acta Iuridica Resoviensia (formelry: The Scientific Journal of the University of Rzeszow, Law Series), vol. 38, no. 120, Sept. 2022, pp. 75-92, doi:10.15584/actaires.2022.3.5.