Halford, Bethany. Underground Science. Chemical & Engineering News: Science & Technology. American Chemical Society. 10 November 2008 [11 November 2020]. (原始内容存档于2020-11-11) (英语).
Austin, Jim. Don't Try This at Home. Science Careers Blog. 13 August 2008 [11 November 2020]. (原始内容存档于2013-06-07).
Halford, Bethany. Underground Science. Chemical & Engineering News: Science & Technology. American Chemical Society. 10 November 2008 [11 November 2020]. (原始内容存档于2020-11-11) (英语).