2021
- Katafuchi, Y. (2020) covid-19_priority_measures_japan, GitHub.
- Database of date of range in priority measures such as the prevention of the spread of disease for prefectures (まん延防止等重点措置; Manenboushitoujutensochi, in Japanese) in Japan / 日本における「まん延防止等重点措置」に関する都道府県別日付データセット