Bandfield, J.L., Glotch, T. D., and Christensen, P. R. 2003. Spectroscopic Identification of Carbonate Minerals in the Martian Dust. Science, 301:1084–1087.
Kerr, R. A. 2003. Eons of a Cold, Dry, Dusty Mars. Science, 301:1037–1038.
Schieber, J., and Arnott, H.J. 2003. Nannobacteria as a by-product of enzyme-driven tissue decay. Geology, 31:717–720.