@article{CTT100924174,
  author = {Hideaki Endo and Mika Goto},
  title = {Cost Inefficiency of Japanese Railway Companies and Impacts of COVID-19 Pandemic and Digital Transformation},
  journal = {Economies},
  year = 2024,
}

@article{CTT100903847,
  author = {Hideaki Endo and Mika Goto},
  title = {The impact of the Covid-19 pandemic on the management of private railway companies in Japan: Profitability and business model analyses},
  journal = {Transport Policy},
  year = 2023,
}