Adams, Noah. — «Cell phone symphony». — All things considered. — Washington : National Public Radio. — Audio file of an interview with Golan Levin broadcast in the context of the program «All things considered» on the National Public Radio (USA), on August 27, 2001. — [Date of reference : April 14, 2005]. — Access : {{http://www.npr.org/templates/story/story.php?storyId=1128063}}.