Ergonomic requirements for office work with visual display terminals (VDTs) - Part 3: Visual display requirements; Amendment A1 (ISO 9241-3:1992/AMD 1:2000); German version EN 29241-3:1993/A1:2000— 17 стр.
Low-voltage switchgear and controlgear - Part 5-1: Control circuit devices and switching elements - Electromechanical control circuit devices (IEC 60947-5-1:2003 + A1:2009) (english version)