1. Council Directive 2004/108/EEC Relating to Electromagnetic Compatibility and Repealing Directive 89/336/EEC;2004/108/EEC;Official Journal of the European Union,2004
2. CISPR, Publication 22 1997
3. Code of Federal Regulations Title 47, Telecommunications (47CFR). Parts 1, 2, 15, 18, and 68 U.S. Government Printing Office Washington, DC