Fruit and vegetable juices - Determination of hesperidin and naringin in citrus juices - Method using high performance liquid chromatography; German version EN 12148:1996— 7 стр.
Precision of test methods - Determination of repeatability and reproducibility for a standard test method by inter-laboratory tests; Identical with ISO 5725, edition 1986— 44 стр.
Accuracy (trueness and precision) of measurement methods and results - Part 5: Alternative methods for the determination of the precision of a standard measurement method (ISO 5725-5:1998), Corrigenda to DIN ISO 5725-5:2002-11 (ISO 5725-5:1998/Cor. 1:2005)— 2 стр.