Terminology for high-voltage direct current (HVDC) transmission (IEC 60633:1998 + A1:2009 + A2:2015); German version EN 60633:1999 + A1:2009 + A2:2015— 39 стр.
Petroleum, petrochemical and natural gas industries - Collection and exchange of reliability and maintenance data for equipment (ISO 14224:2016, Corrected version 2016-10-01); English version EN ISO 14224:2016, only on CD-ROM— 304 стр.