@article{CTT100939644,
  author = {Tsubasa Kaino and Kazuyoshi Hidaka},
  title = {Effect of privatizing Japanese expressway companies on maintenance and management efficiency},
  journal = {Transport Economics and Management},
  year = 2025,
}

@article{CTT100939643,
  author = {Tsubasa Kaino and Kazuyoshi Hidaka},
  title = {Achievement of privatization objectives of Japanese expressway companies},
  journal = {Case Studies on Transport Policy},
  year = 2024,
}