Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
KITAMURA R.,A discrete-continuous analysis of time allocation to two types of discretionary activities which accounts for unobserved heterogeneity,Transportation and Traffic Theory,,Elsevier Science,1996,,,431-453,https://cir.nii.ac.jp/crid/1573950398862294144,