H. Palme

The solar-system abundances of Nb, Ta, and Y, and the relative abundances of refractory lithophile elements in differentiated planetary bodies

K. Jochum, B. Spettel, H. Seufert, 1986 .

Dar al Gani 431: A new anomalous CK 3 chondrite?

R. Clayton, J. Zipfel, B. Spettel, 2000 .

Mineralogy and chemistry of Rumuruti: The first meteorite fall of the new R chondrite group

G. Dreibus, B. Spettel, A. Bischoff, 1994 .

Terminology for trace-element partitioning

John H. Jones, G. Mckay, M. Drake, 1993 .

Chemical Composition of an Unusual Xenolith of the Allende Meteorite

B. Spettel, A. Burghele, G. Kurat, 1989 .