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| CEI Comitato Elettrotecnico Italiano | |
| UNI Ente Nazionale Italiano di Unificazione | |
| IEC International Electrotecnical Commission | |
| ISO International Organization for Standardization | |
| CEN European Committee for Standardization | |
| CENELEC European Committee for Electrotechnical Standardization | |
| ITU-T ITU Telecommunication Standardization Sector | |
| DIN Deutsches Institut fur Normung e.V. | |
| VDE VDE Verlag | |
| AFNOR L'Association francaise de Normalisation | |
| BSI BSI British Standards | |
| DEF STAN (NES) UK Defence Standardization Organisation | |
| IBN Belgian Institut for Standardisation | |
| DS Danish Standards Association | |
| SIS Swedish Standards Institutes | |
| IPQ Instituto Portugues da Qualidade | |
| NEN Het Nederlands Normalisatie-instituut | |
| SN Standards Norway | |
| DNV Det Norske Veritas | |
| ON Austrian Standards Institute | |
| AS Standards Australia Publications | |
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| IMQ Istituto del Marchio di Qualità | |
| LPBC | |
| Sincert | |
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| AICE | |
| ANIE | |
| CONFINDUSTRIA | |
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| LME London Metal Exchange Gran Bretagna | |
| UIC Ufficio Italiano Cambi | |
| Notizie internazionali sui metalli | |
| Ricerca delle DIRETTIVE EUROPEE | |
| Gazzetta Ufficiale | |
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