(en) Takenobu Takizawa et Reijer Grimbergen, Computers and games: Second International Conference, CG 2000, Hamamatsu, Japan, October 26-28, 2000, Berlin, T. Anthony Marsland, (ISBN3-540-43080-6, lire en ligne), p. 440 :
« When asked in 1996 when he(Habu) thought a computer would beat him, his clear answer was “2015” »
Allis 1994 * Victor Allis, Searching for Solutions in Games and Artificial Intelligence, Ph.D. Thesis, University of Limburg, Maastricht, The Netherlands, , PDF (ISBN90-90-07488-0, lire en ligne)