1. 1) 国土交通省:都市のスポンジ化について,2017. [Ministry of Land, Infrastructure, Transport and Tourism: Urban Spongification, 2017.]
2. 2) Fast-growing food truck industry can operate amid covid-19 social distancing rules, no indoor seating orders, https://www.census.gov/library/stories/2020/09/food-trucks-one-way-to-eat-out-during-pandemic.html (access date 2023/06/15)
3. 3) 全国スーパーマーケット協会,平成 28 年スーパーマーケット年次統計調査,2016. [National Supermarket Association of Japan: Supermarkets Annual Statistical Survey 2016, 2016.]
4. 4) 全国スーパーマーケット協会,2021 年スーパーマーケット年次統計調査,2021. [National Supermarket Association of Japan: Supermarkets Annual Statistical Survey 2021, 2021.]
5. 5) https://www.mitsuifudosan.co.jp/corporate/news/2020/1215_03/ (access date 2022/02/17)