www.stephenwolfram.com
Official website. Includes extensive biographical material, interviews, lists and sample contents of the author's books and other publications, information about Mathematica, and Wolfram's answers to various questions.
URLs from www.stephenwolfram.com:
URL: http://www.stephenwolfram.com/publications/talks/ycombinatorschool/ URL: http://www.stephenwolfram.com/publications/articles/ca URL: http://www.stephenwolfram.com
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