µ-Synchrotron radiation excited X-ray fluorescence microprobe trace element studies on spherules of the Cretaceous/Tertiary boundary transitions of NE-Mexico and Haiti samples

  • Author:

    Kramar, U., Harting, M., Rickers, K., Stüben, D.
  • Source:

    Spectrochim. Acta Part B62, 824-835 (2007)