1. [1] http://law.e-gov.go.jp/htmldata/S36/S36HO223.html (In Japanese)
2. [2] http://unpan1.un.org/intradoc/groups/public/documents/APCITY/UNPAN009437.pdf
3. [3] http://www.japaneselawtranslation.go.jp/law/detail_main?re=01&vm=&id=1736 (Japanese)
4. [4] http://www.ieee802.org/15/pub/TG6.html
5. [5] http://law.e-gov.go.jp/htmldata/S35/S35HO145.html (Japanese)