https://en.wikipedia.org/wiki/9_Evenings:_Theatre_and_Engineering
◇ Media Art Net | 9 Evenings: Theater & Engineering
http://www.medienkunstnetz.de/exhibitions/9evenings/
◇ 9 Evenings: Theatre and Engineering: The 10 performances (October 13-23, 1966)
http://www.fondation-langlois.org/html/e/selection.php?Selection=9EVO
◇ 9 Evenings Theater & Engineering - Google 検索
https://www.google.com/search?q=9+Evenings+Theater+%26+Engineering&oq=9+Evenings+Theater+%26+Engineering&aqs=chrome..69i57j0.198j0j9&sourceid=chrome&ie=UTF-8#q=9+Evenings+Theater+%26+Engineering&tbm=vid