Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Nicola Christie and Heather Ward,The health and safety risks for people who drive for work in the gig economy,Journal of Transport & Health,2214-1405,Elsevier BV,2019-06,13,,115-127,https://cir.nii.ac.jp/crid/1360857597087368832,https://doi.org/10.1016/j.jth.2019.02.007