BS ISO/IEC 12862. Information technology. 120 mm (8,54 Gbytes per side) and 80 mm (2,66 Gbytes per side) DVD recordable disk for dual layer (DVD-R for DL)
Erection of Power Installations with Nominal Voltages up to 1000 V - Part 4: Protection for Safety; Chapter 41: Protection Against Electric Shock (IEC 60364-4-41:1992, modified)
Erection of Power Installations with Nominal Voltages up to 1000 V - Part 4: Protection for Safety; Chapter 47: Application of Protective Measures for Safety (IEC 60364-4-47 modified)