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2. 2) Ministry of the Environment: Law Concerning Reporting, etc. of Releases to the Environment of Specific Chemical Substances and Promoting Improvements in Their Management, <http://www.env.go.jp/en/laws/chemi/prtr/index.html>, (2007/01/23).
3. 3) CIAJ: Japan's Telecommunications Equipment Statistics Production/Imports/Exports <http://www.ciaj.or.jp/content/info/dat.html>, (2007/01/23).
4. 4) Nikko Smith Barney Limited: Mobile Telecommunications Field Theory, p. 11.
5. 5) K. Sumio: Role of the Administration to the Promotion for Cellular Phone Recycling, Institute for Posts and Telecommunications Policy (2002. 10).