@phdthesis{oai:nagoya.repo.nii.ac.jp:00017129,
 author = {WU, Yong and 呉, 勇},
 month = {Nov},
 school = {名古屋大学, Nagoya University},
 title = {A Study on Crash Risk at Expressway Basic Segments and Its Influencing Factors},
 year = {2013}
}