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) Corinne Mulley and John D. Nelson,Flexible transport services: A new market opportunity for public transport,Research in Transportation Economics,0739-8859,Elsevier BV,2009-01,25,1,39-45,https://cir.nii.ac.jp/crid/1362262946239985280,https://doi.org/10.1016/j.retrec.2009.08.008