Standard DIN EN 61293, Publication date: 1995-02 Marking of electrical equipment with ratings related to electrical supply  - Safety requirements (IEC 61293:1994); German version EN 61293:1994

Standard DIN 4002-2, Publication date: 2007-07 Properties and their scopes for product data exchange - Part 2: Terms and conceptional information model

Standard DIN EN 60027-1, Publication date: 2007-09 Letter symbols to be used in electrical technology - Part 1: General (IEC 60027-1:1995 (Reprint) + A1:1997 + A2:2005); German version EN 60027-1:2006 + A2:2007

Standard DIN EN 60027-2, Publication date: 2007-11 Letter symbols to be used in electrical technology - Part 2: Telecommunications and electronics (IEC 60027-2:2005); German version EN 60027-2:2007

Standard DIN EN 60027-3, Publication date: 2007-11 Letter symbols to be used in electrical technology - Part 3: Logarithmic and related quantities, and their units (IEC 60027-3:2002); German version EN 60027-3:2007

Standard DIN 820-2, Publication date: 2009-12 Standardization - Part 2: Presentation of documents (ISO/IEC Directives - Part 2:2004, modified); Trilingual version CEN/CENELEC Internal Regulations - Part 3:2009

ECE R. 20, Publication date: Standardization - Part 2: Presentation of documents (ISO/IEC Directives - Part 2:2004, modified); Trilingual version CEN/CENELEC Internal Regulations - Part 3:2009

Standard ISO 80000-1, Publication date: 2009-11 Quantities and units - Part 1: General

NIST SP 811, Publication date: Quantities and units - Part 1: General