Electromechanical elementary relays of assessed quality - Part 10: Sectional specification; Relays for industrial application (IEC 61811-10:2002); German version EN 61811-10:2003— 24 стр.
Rules of procedure for the IEC Quality Assessment System for electronic components (IECQ) - Part 3: Approval procedures; technology Approval (IEC QC 001002-3:1995)
Electromechanical elementary relays of assessed quality - Part 11: Blank detail specification; Relays for industrial application (IEC 61811-11:2002); German version EN 61811-11:2003— 22 стр.