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References
McKay, D. S. Science 273, 924–930 (1996).
Urey, H. C. Science 151, 157–166 (1966).
Strother, P. in Environmental Evolution (eds Margulis, L. & Olendzenski, L.) 87–101 (MIT Press, Cambridge, MA, 1992).
Harvey, R. P. & McSween, H. Y. Nature 382, 49–51 (1996).
Sagan, C. (ed.) Communication with Extraterrestrial Intelligence (MIT Press, Cambridge, MA, 1973).
Adler, A. Atlantic Monthly 234, 109 (1974). Reprinted in The Quest for Extraterrestrial Intelligence (ed. Goldsmith, D.) 224–227 (University Science Books, Mill Valley, CA, 1980).
Kvenvolden, K. et al. Nature 228, 923–926 (1970).
Thomas, P. J., Chyba, C. F. & McKay, C. P. Comets and the Origin and Evolution of Life (Springer, New York, 1996).
Simpson, G. G. in Communication with Extraterrestrial Intelligence (ed. Sagan, C.) 362–364 (MIT Press, Cambridge, MA, 1973).
Burrows, A. & Lunine, J. Nature 378, 333 (1995).
Morrison, P., Billingham, J. & Wolfe, J. (eds) The Search for Extraterrestrial Intelligence (NASA SP-419, 1977).
Tarter, J. C. & Michaud, M. A. (eds) Acta Astronaut. 21(2), 69–154 (1990).
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Chyba, C. Life beyond Mars. Nature 382, 576–577 (1996). https://doi.org/10.1038/382576a0
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DOI: https://doi.org/10.1038/382576a0