Graphical symbols for diagrams - Part 11: Architectural and topographical installation plans and diagrams (IEC 60617-11:1996); German version EN 60617-11:1996— 49 стр.
Ships and marine technology - Drainage systems on ships and marine structures - Part 1: Sanitary drainage-system design (ISO 15749-1:2004); German version EN ISO 15749-1:2004— 27 стр.