Pfiffner, S.M., T.C. Onstott, T. Ruskeeniemi, M. Talikka, C. Bakermans, D. McGown, E. Chan, et al. 2008. “Challenges for Coring Deep Permafrost on Earth and Mars”. Astrobiology 8: 623-38. doi:10.1089/ast.2007.0159. Reference Link
Magnabosco, C., K. Ryan, M.C.Y. Lau, O. Kuloyo, Sherwood Lollar, T.L. Kieft, E. van Heerden, and T.C. Onstott. 2016. “A Metagenomic Window into Carbon Metabolism at 3 Km Depth in Precambrian Continental Crust”. ISME Journal 10: 730-41. doi:10.1038/ismej.2015.150. Reference Link
