Electromechanical switches for use in electrical and electronic equipment - Part 1: Generic specification (IEC 61020-1:2009); German version EN 61020-1:2009— 73 стр.
Underground mining machines - Mobile extracting machines at the face - Safety requirements for shearer loaders and plough systems (ISO 19225:2017); German version EN ISO 19225:2017— 38 стр.