Obrist, Hans Ulrich. — «Turning to Technology : legendary engineer Billy Klüver on artist-engineer collaborations». — CRAC in context. — Edited by Jon Brunberg. — Stockholm : Creative Room for Art and Computing. — Text written in 1998. — [Date of reference : January 11, 2004]. — Access : {{http://www.crac.org/contextmapp/eat.htm}}.