http://www.financieredunet.com/articles/kutaragi.html
http://www.zdnetindia.com/news/specials/25movers2001/stories/18332.html
http://www.metropolis.co.jp/biginjapanarchive349/317/biginjapaninc.htm
http://ne.nikkeibp.co.jp/english/2001/30aniv/int5_1.html
http://psxtreme.ifrance.com/psxtreme/ps2/ps2-historique.html