Changes

* [https://en.chessbase.com/post/ken-thompson-dennis-ritchie-win-japan-nobel-prize Ken Thompson, Dennis Ritchie win Japan 'Nobel' Prize], [[ChessBase|ChessBase News]], January 26, 2011

* [https://www.i-programmer.info/history/people/547-ritchie-a-thompson.html?start=2 Ritchie & Thompson - Belle for Chess] from [http://www.i-programmer.info/ I Programmer - programming, reviews and projects], January 26, 2011

* [https://en.chessbase.com/post/ken-thompson-moscow-adventures-2 Ken Thompson: Moscow adventures (2)] by [[Frederic Friedel]], [[ChessBase|ChessBase News]], January 05, 2020

==<span id="Oral History"></span>Oral History==