Evaluation of sunscreen products; experimental dermatological evaluation of the protection against erythema of external sunscreen products for the human skin— 7 стр.
Optical radiation physics and illumination Engineering - Supplement 1: Index of quantities, symbols and units; and subject index to DIN 5031 part 1 to part 11— 24 стр.
BS EN 60947-9-2. Low-voltage switchgear and controlgear. Active arc-fault mitigation systems. Part 9-2. Optical-based internal arc-detection and mitigation devices— 50 стр.