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Christensen, Thomas (March 4, 2001). "She Blinded Them With Science". San Francisco Chronicle. Archived from the original on July 7, 2012. Retrieved May 1, 2010.; New Scientist vol 170 issue 2294 - 09 June 2001, p. 47; Kvenvolden, Keith A. Organic Geochemistry. Vol 32, Issue 5, May 2001, pp. 771-771. ISSN0146-6380
Christensen, Thomas (March 4, 2001). "She Blinded Them With Science". San Francisco Chronicle. Archived from the original on July 7, 2012. Retrieved May 1, 2010.; New Scientist vol 170 issue 2294 - 09 June 2001, p. 47; Kvenvolden, Keith A. Organic Geochemistry. Vol 32, Issue 5, May 2001, pp. 771-771. ISSN0146-6380