Ethanol as a blending component for petrol - Determination of phosphorus content - Ammonium molybdate spectrometric method; German version EN 15487:2007— 12 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.