Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Sanko Nobuhiro and Morikawa Takayuki,Effects of Response Formats in Contingent Valuation of Travel Mode Switching Behaviour : An Inspection for the Effectiveness of One-and-Half Bound SP Data,国民経済雑誌,03873129,神戸大学経済経営学会,2007-10,196,4,65-72,https://cir.nii.ac.jp/crid/1390853649857933312,https://doi.org/10.24546/00056184