https://www.itmedia.co.jp/news/articles/2012/16/news059.html

https://akiba-pc.watch.impress.co.jp/docs/wakiba/find/1296343.html

https://this.kiji.is/712804358220562432

https://www.asahi.com/articles/ASNDK4CD0ND8UTIL01W.html

https://cosinon.hateblo.jp/entry/2020/12/19/decal

https://news.livedoor.com/article/detail/19405386/

https://www.itmedia.co.jp/news/articles/2012/19/news026.html

https://www.j-cast.com/kaisha/2020/12/18401444.html?p=all

https://diamond.jp/articles/-/257605