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2. Sharing the moon by thirds;Heidmann;Advances in Space Research,2000
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4. Laydown of a tether from Earth visible location to far side for Lunar SETI;Maccone;Advances in Space Research,2000
5. C. Maccone, Searching for bioastronomical signals from the Farside of the Moon, First European Workshop on Exo/Astrobiology held at ESRIN, Frascati, Italy, 21–23 May 2001, published by ESA in the relevant Proceedings called ESA SP-496, August 2001, p. 277–280.