DeFlaun, M.F., J.K. Fredrickson, H. Dong, S.M. Pfiffner, T.C. Onstott, D.L. Balkwill, S.H. Streger, E. Stackebrandt, S. Knoessen, and E. van Heerden. 2007. “Isolation and Characterization of a Geobacillus Thermoleovorans Strain from an Ultra-Deep South African Gold Mine”. Systematic and Applied Microbiology 30: 152-64. doi:10.1016/j.syapm.2006.04.003.

Balkwill, D.L., T.L. Kieft, T. Tsukuda, H.M. Kostandarithes, T.C. Onstott, S. Macnaughton, J. Bownas, and J.K. Fredrickson. 2004. “Identification of Iron-Reducing Thermus Strains As Thermus Scotoductus”. Extremophiles 8: 37-44. doi:10.1007/s00792-003-0357-0.

Balkwill, D.L., T.L. Kieft, T. Tsukuda, H.M. Kostandarithes, T.C. Onstott, S. Macnaughton, J. Bownas, and J.K. Fredrickson. 2004. “Identification of Iron-Reducing Thermus Strains As Thermus Scotoductus”. Extremophiles 8: 37-44. doi:10.1007/s00792-003-0357-0.