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Ponder, M., Urbance, J., & Tiedje, J.  (2002).  Physiological characterization of two Siberian permafrost isolates under permafrost-like conditions [Abstract].  Astrobiology Science Conference 2002 (p.208), NASA Ames Research Center, Moffett Field, CA.
Ponder, M.A., Vishnivetskaya, T., Urbance, J. & Tiedje, J.M.  (2001).  Survival of permafrost isolates at cold temperatures [Abstract].  Abstracts of the International Symposium on Microbial Ecology (p. 211), Amsterdam, The Netherlands.
Spirina, E.V., Cole, J.R., Chai, B., Gilichinsky, D.A., Tiedje, J.M.  (2002).  High through put approach to study microbial phylogenetic diversity in permafrost as a terrestrial model of Mars [Abstract].  Astrobiology Science Conference 2002 (p.214), NASA Ames Research Center, Moffett Field, CA.
Tiedje, J.M., Vishnivetskaya, T., Ponder, M., Urbance, J., Kathariou, S., McGrath, J. & Gilichinsky D.  (2001).  Phylogenetic and phenotypic analysis of microorganisms recovered from ancient Siberian permafrost [Abstract].  International Conference on Conservation and Transformation of Matter and Energy in the Earth Cryosphere (p. 39), Pushchino, Russia.
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