Safety of machinery - Basic concepts, general principles for design - Part 2: Technical principles and specifications; German version EN 292-2:1991 + A1:1995— 47 стр.
Tractors, machinery for agriculture and forestry, powered lawn and garden equipment - Symbols for operator controls and other displays - Part 2: Symbols for agricultural tractors and machinery (ISO 3767-2:1991); German version EN ISO 3767-2:1995— 14 стр.