Raczek, I., Jochum, K. P., & Hofmann, A. W. (2003). Neodymium and strontium isotope data for USGS reference materials BCR-1, BCR-2, BHVO-1, BHVO-2, AGV-1, AGV-2, GSP-1, GSP-2 and eight MPI-DING reference glasses. Geostandards Newsletter, 27(2), 173-179.