General requirements for the competence of testing and calibration laboratories (ISO/IEC 17025:2005); German and English version EN ISO/IEC 17025:2005, Corrigenda to DIN EN ISO/IEC 17025:2005-08; German and English version EN ISO/IEC 17025:2005/AC:2006— 4 стр.
Wood and wood-based products - Calculation of the biogenic carbon content of wood and conversion to carbon dioxide; German version EN 16449:2014— 10 стр.