Ethanol as a blending component for petrol - Determination of copper content - Graphite furnace atomic absorption spectrometric method; German version EN 15488:2007— 13 стр.
Petroleum products - Determination and application of precision data in relation to methods of test (ISO 4259:2006); German version EN ISO 4259:2006, Corrigenda to DIN EN ISO 4259:2006-10— 2 стр.