Michael Polanyi, The Tacit Dimension (Chicago, IL: University of Chicago Press, 2009), стр. 4.
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Joseph Hooper, “DARPA’s Debacle in the Desert”, Popular Science, 4 июня 2004 г., http://www.popsci.com/scitech/article/2004–06/darpa-grand-challenge-2004darpas-debacle-desert.
