Thomas Gold: Cosmic Garbage in: Air Force and Space Digest Nr. 43, Mai 1960, S. 65; zit. nach George Basalla: Civilized life in the universe. Scientists on intelligent extraterrestrials Oxford University Press, New York 2006, ISBN 0-19-517181-0, S. 145; „garbage theory“ of the origin of life daviddarling.info, abgerufen am 29. September 2012
doi.org
Carl Sagan: Direct contact among galactic civilizations by relativistic interstellar spaceflight. Planetary and Space Science, Vol. 11, S.485, 05/1963, doi:10.1016/0032-0633(63)90072-2, abstract @osti.gov, abgerufen am 3. August 2011
Carl Sagan: Direct contact among galactic civilizations by relativistic interstellar spaceflight. Planetary and Space Science, Vol. 11, S.485, 05/1963, doi:10.1016/0032-0633(63)90072-2, abstract @osti.gov, abgerufen am 3. August 2011
„Shortly after the discovery of pulsars I wished to present an interpretation of what pulsars were, at this first pulsar conference: namely that they were rotating neutron stars. The chief organiser of this conference said to me, „Tommy, if I allow for that crazy an interpretation, there is no limit to what I would have to allow“. I was not allowed five minutes floor time, although I in fact spoke from the floor. A few months later, this same organiser started a paper with the sentence, "It is now generally considered that pulsars are rotating neutron stars.“ Thomas Gold: „New Ideas in Science“ (Memento vom 26. März 2010 im Internet Archive), Journal of Scientific Exploration, 1989, Vol. 3, No. 2, 103 – 112.
