@phdthesis{oai:nagoya.repo.nii.ac.jp:00030583,
 author = {Zheng, Xun and 鄭, 巽},
 month = {Sep},
 school = {名古屋大学, Nagoya University},
 title = {Study on Option Price of Public Transport: Theory, Evaluation Method, and Case Study in Japan},
 year = {2020}
}