Moser, D.P., T.C. Onstott, J.K. Fredrickson, F.J. Brockman, D.L. Balkwill, G.R. Drake, S.M. Pfiffner, et al. 2003. “Temporal Shifts in the Geochemistry and Microbial Community Structure of an Ultradeep Mine Borehole Following Isolation”. Geomicrobiology Journal 20: 517-48. doi:10.1080/713851170.

Tobin, K.J., F.S. Colwell, T.C. Onstott, and R. Smith. 2000. “Recent Calcite Spar in an Aquifer Waste Plume: A Possible Example of Contamination Driven Calcite Precipitation”. Chemical Geology 169: 449-60. doi:10.1016/S0009-2541(00)00220-5.