1.		EN 55022/A2 : information technology equipment - radio disturbance characteristics: limits and methods of measurement: (CISPR 22: 1997/A2: 2002) / European Committee for Electrotechnical Standardization Data Publicação: 2003 Tema: Normas
2.		EN 61131-2 : programmable controllers: part 2: equipment requirements and tests: (IEC 61131-2: 2003) / European Committee for Electrotechnical Standardization Data Publicação: 2003 Tema: Normas