Weis, D., B. Kieffer, D. Hanano, I. Nobre Silva, J. Barling, W. Pretorius, C. Maerschalk, and N. Mattielli 2007. Hf isotope compositions of U.S. Geological Survey reference materials, Geochem Geophys. Geosyst., 8, Q06006, doi:10.1029/2006GC001473.
Pretorius W., Weis D., Williams G., Hanano D., Kieffer B. and Scoates J.S. 2006. Complete Trace Elemental Characterization of Granitoid (USGSG-2,GSP-2) Reference Materials by High Resolution Inductively Coupled Plasma-Mass Spectrometry. Geostandards and Geoanalytical Research, 30(1), 39-54.
Weis D., Kieffer B., Maerschalk C., Barling J., De Jong J., Williams G., Hanano D., Pretorius W., Mattielli N., Scoates J.S., Goolaerts A., Friedman R., Mahoney J.B. 2006. High-precision isotopic characterization of USGS reference materials by TIMS and MC-ICP-MS. Geochem. Geophys. Geosyst., 7, Q08006, doi:10.1029/2006GC001283.
Weis D., Kieffer B., Maerschalk C., Pretorius W. and Barling J. 2005. High-precision Pr-Sr-Nd-Hf isotopic characterization of USGS BHVO-1 and BHVO-2 reference materials. Geochemistry, Geophysics, Geosystems, 6, Q02002, doi:10.1029/2004GC000852.
Albarède F., Stracke A., Salters V.J.M., Weis D., Blichert-Toft J., Télouk P., Agranier A. Comment to “Pb isotopic analysis of standards and samples using a 207Pb-204Pb double spike and thallium to correct for mass bias with a double-focusing MC-ICP-MS” by Baker et al. Chem. Geol., 217, 171-174, 2005.