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Frank White: The Seti Factor – How the Search for Extraterrestrial Intelligence Is Changing Our View of the Universe and Ourselves. Walker & Company, New York 1990,

David W. Swift: Seti Pioneers — Scientists Talk about Their Search for Extraterrestrial Intelligence. Univ. of Arizona Press, Tucson 1993,

P.Morrison, J.Billingham, J.Wolfe: The search for extraterrestrial intelligence-SETI. NASA SP, Washington 1977, online