Westfahl, Gary
Science Fiction Studies. 24(2): 193-206. July 1997.
Silverberg, Robert
in: Silverberg, Robert. Musings and Meditations: Reflection on Science Fiction and Other Matters. New York: Nonstop, 2011. p. 130-133. (Reprinted from Asimov's Science Fiction, June 2003)
Hillegas, Mark R.
Ph.D. Dissertation, Columbia University, 1957. 258pp.
Benjamin, Marina
New Statesman 132(4624): 32-33. February 10, 2003.
Giles, Geoffrey
Fantasy Review 3(16): 16-19. Autumn 1949.
Johnson, Les; Matloff, Gregory L.
Analog 126(11): 44-53. November 2006.
Landis, Geoffrey
in: Benford, James and Benford, Gregory, eds. Starship Century. Microwave Sciences, 2013. p. 119-128.
Lucas, Paul
Strange Horizons [8 p.] January 12, 2004. (Online resource: http://www.strangehorizons.com/)
Strange Horizons [10 p.] January 19, 2004. (Online resource: http://www.strangehorizons.com/)
Kanas, Nick
Analog 129(10): 33-41. October 2009.
Mallove, Eugene; Matloff, Gregory L.
New York: Wiley, 1989. 274 p.
Everett, Allen; Roman, Thomas
Chicago; University of Chicago Press, 2012. 268 p.
Rees, Martin
in: Benford, James and Benford, Gregory, eds. Starship Century. Microwave Sciences, 2013. p. 17-26.
Fewer, Greg
in: Russell, Miles, ed. Digging Holes in Popular Culture: Archaeology and Science Fiction Oxford, UK: Oxbow Books, 2002. p. 112-120.
Yandell, Stephen
Mythlore 12(1):9-23. Autumn 1985.
Creasey, Ian
Strange Horizons May 19, 2003. (http://www.strangehorizons.com/2003/20030519/jargon.shtml) Accessed 2.February.2014.)
No authors listed.
Fantasy Times 1(16):1. September 8, 1946.
Moskowitz, Sam
Fantastic Universe 11(6):80-88, 79. October 1959.
Potts, Stephen W.
In: Westfahl, Gary, ed. Societies in Space: Essays on the Civilized Frontier in Film and Television. Jefferson NC: McFarland, 2025. p. 204-219.
Irtenkauf, Dominik
In: Wylutzki, Melanie and Kettlitz, Hardy, eds. Das Science Fiction Jahr 2022. Berlin: Hernkost, 2022. p. 31-40.
Both, Wolfgang
Quarber Merkur No. 119: 105-123. November 2018.
Cabezas-Garrido, Juan Antonio
Proyecto, Progreso, Arquitectura No. 3: 136-155. 2010.
Pischel, Christain
In: Haupts, Tobias and Pischel, Christian, eds. Space Agency: Medien und Poetiken des Weltraums. Bielefeld, transcript Verlag, 2021. p. 99-118.
Chambon, Jacques
Change No. 40: 121-131. March 1981.
Locke, George
London: Ferret Fantasy, 1975. 80 p.
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