German standard methods for the examination of water, waste water and sludge - General information (group A) - Part 71: Equivalance of two analytical methods based on the comparison of results and their statistical evaluation, Procedure for quantitative characteristics with continuous set of values (A 71)— 30 стр.
Characterization of waste - Screening methods for elemental composition by X-ray fluorescence spectrometry for on-site verification; German version CEN/TR 16176:2011
Characterization of waste - Screening methods for the element composition by portable X-ray fluorescence instruments; German version EN 16424:2014— 34 стр.
Characterization of waste - Screening methods for the element composition by portable X-ray fluorescence instruments; German version EN 16424:2014— 34 стр.