・Public charity offer as a proximate factor of evolved reputation-building strategy: an experimental analysis of a real-life situation
https://www.sciencedirect.com/science/article/abs/pii/S1090513807000396
・Marshmello & Halsey - Be Kind
https://www.youtube.com/watch?v=n7eq3E9zE2Y
・BRULEE（ブリュレ）
https://www.ohayo-milk.co.jp/ice/15010.html
・ドキュメント72時間 選「駄菓子屋・子どもたちの小さな宇宙」
https://www4.nhk.or.jp/72hours/x/2020-05-15/21/2000/1199306/
・豆腐room Dy's