Basic concepts in metrology; Terminology relating to the uncertainty of measurement and the assessment of measuring instruments and measuring equipment— 14 стр.
High-pressure sodium vapour lamps (IEC 662 (1980) 1st edition and amendment 1 (1986) and amendment 2 (1987), modified); german version EN 60662:1989— 46 стр.
Light and lighting - Measurement and presentation of photometric data of lamps and luminaires - Part 1: Measurement and file format; German version EN 13032-1:2004— 60 стр.
Light and lighting - Measurement and presentation of photometric data of lamps and luminaires - Part 1: Measurement and file format; German version EN 13032-1:2004— 60 стр.