Petroleum and related products - Determination of the extreme-pressure and anti-wear properties of fluids - Four ball method (European conditions) (ISO 20623:2003); German version EN ISO 20623:2003— 26 стр.
Textiles - Fibres - Determination of breaking force and elongation at break of individual fibres (ISO 5079:1979); German version EN ISO 5079:1995— 6 стр.