Preparation of documents used in electrotechnology - Part 1: General requirements; Amendment A2 (IEC 61082-1:1991/A2:1996); German version EN 61082-1:1993/A2:1996— 11 стр.
Guide for procurement of power station equipment - Part 2-2: Electrical equipment; uninterruptible power supplies; German version EN 45510-2-2:1999— 18 стр.