Wilder Dwight Bancroft, American Chemical Society in The journal of physical chemistry (1917)
Journal Article 1
Freeman Dyson in Slashdot (May 13, 2013)
Internet Article 3
Brian Koberlein (10/28/2014)
Internet Article 1
Allegra Goodman in Dial Press Trade Paperback (2007-03-13)
Book 1
Daniel C Dennett in Penguin UK (2013-05-06)
Book 4
Issac Newton (1692/12/10)
Personal Letter 1
Averil M. Lysaght in Univ of California Press (1971)
Book 1
Alfred J. Ayer, Sir Alfred Jules Ayer in Dover Publications (1952-06-01)
Book 2
Carl Sagan in Library of congress (January 22, 1992)
Personal Letter 1
Thomas Jefferson (June 24, 1826 )
Personal Letter 1
David Darling in Basic Books (AZ) (2002-05-02)
Book 1
Albert Einstein in Ams Pr Inc (1979-01-01)
Book 1
