9Hiroshi,et al.On-stream X-ray fluorescence analy-sis with self-compensation for slurry density variat-ion Int[J].Appl Radiat Isot,1978,29(5):537-541.
10Madan lal,et al.Sensitive method for the determina-tion of rare earth elements by radioisotope-excited XRF employing a high-purity germanium detector in optimized geometry [J].X-ray spectrometry,1993,22(5):349-351.