Alkaline secondary cells and batteries - Sealed nickel-cadmium cylindrical rechargeable single cells (IEC 60285:1993 + Corrigendum 1993); German version EN 60285:1994— 15 стр.
Direct acting indicating analogue electrical-measuring instruments and their accessories - Part 1: Definitions and general requirements common to all parts (IEC 60051-1:1997); German version EN 60051-1:1998— 25 стр.