Direct acting indicating analogue electrical measuring instruments and their accessories; part 2: special requirements for ammeters and voltmeters (IEC 60051-2:1984, edition 4); german version EN 60051-2:1989— 7 стр.
Lead-acid traction batteries - Part 2: Dimensions of cells and terminals and marking of polarity on cells (IEC 60254-2:1997); Version allemande EN 60254-2:1997— 7 стр.
Lead-acid traction batteries - Part 2: Dimensions of cells and terminals and marking of polarity on cells (IEC 60254-2:2008); German version EN 60254-2:2008— 18 стр.