著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Olja Cokorilo,Urban Air Mobility: Safety Challenges,Transportation Research Procedia,2352-1465,Elsevier BV,2020,45,,21-29,https://cir.nii.ac.jp/crid/1360298760856588416,https://doi.org/10.1016/j.trpro.2020.02.058