1. Extraterrestrial cause for the Cretaceous-Tertiary extinction;Alvarez;Science,1980
2. Abundances of the elements: Meteoritic and solar;Anders;Geochim. Cosmochim. Acta,1989
3. Radiochemical Neutron Activation Analysis for 36 Elements in Geological Materials: Au, Ag, Bi, Br, Cd, Cs, Ge, In, Ir, Ni, Os, Pd, Rb, Re, Sb, Se, Te, Tl, U and Zn as well as Sc, Y, and REE; NAS-NS-3117;Anders,1988
4. Chemical composition of the mantle;Anderson;J. Geophys. Res.,1983
5. 1988 values for GSJ rock reference samples, “Igneous rock series”;Ando;Geochem. J.,1989