David G. Hartwell

Overlook Film Encyclopedia: Science Fiction, The Overlook Press  Hartwell, David G.; Cramer, Kathryn (2006), The Space Opera Renaissance, Tor Books,

Fiction ... he called A Fall of Moondust "hard" science fiction” ^ Hartwell, David G.; Kathryn Cramer (2002). “Introduction: New People, New Places, New

24, No. 1, pp49-59, 1924 R. A. Anderl, J. K. Hartwell, J. H. Nadler, J. M. DeMora, R. A. Stubbers, and G. H. Miley, Development of an IEC Neutron Source

ncbi.nlm.nih.gov/pmc/articles/PMC1858714/.  ^ Paulovich AG, Toczyski DP, Hartwell LH (February 1997). “When checkpoints fail”. Cell 88 (3): 315–21. doi:10

Grundrisse. Koninklijke Brill Nv. ISBN 978-90-04-23676-9  Cramer, Kathryn; Hartwell, David. G (10 July 2007). The Space Opera Renaissance. Orb Books. ISBN 978-0765306180