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incompleteness theorem. Oxford Dictionaries. Oxford University Press, n.d. Web. 20 December 2014.
<http://www.oxforddictionaries.com/definition/english/incompleteness-theorem>.

incompleteness theorem. Oxford Dictionaries. Oxford University Press.
http://www.oxforddictionaries.com/definition/english/incompleteness-theorem (accessed December 20, 2014).