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* [http://en.chessbase.com/ ChessBase - Chess News]
* [http://en.chessbase.com/post/chebase-is-25-everything-25-off-in-our-shop ChessBase is 25 – everything 25% off in our shop], [[ChessBase|ChessBase News]], May 19, 2011
* [https://en.chessbase.com/post/25-questions-for-matthias-wullenweber-in-acm-12 25 questions for Matthias Wüllenweber in ACM #12] by [https://en.wikipedia.org/wiki/List_of_chess_periodicals American Chess Magazine], [[ChessBase|ChessBase News]], August 02, 2019 » [[Matthias Wüllenweber]]
===ChessBase 8===
* [https://en.chessbase.com/post/database-basics-part-1 Database Basics - Part 1] by [[Steve Lopez]], [[ChessBase|ChessBase News]], August 24, 2004
