Archive document : Press release Soundings. – New York : The Museum of Modern Art, October 21, 1970. – [3] p. – Press release.
Text in periodical Lindgren, Nilo. – «Art and technology : 1. steps toward a new synergism». – IEEE Spectrum. – (Apr. 1969). – P. 59-68.
Solo exhibition [Soundings], The Museum of Modern Art, New York, N. Y., United States, October 22-January 26, 1968.