HL-20 Personnel Launch System (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "HL-20 Personnel Launch System" in English language version.

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aviationweek.com

doi.org

jstor.org

nasa.gov

  • Hodges, Jim (Fall 2011). "The Dream Chaser: Back to the Future". ASK Magazine. NASA. Archived from the original on 2 December 2013. Retrieved 16 November 2013.
  • "HL-20 model for Personnel Launch System research". NASA. June 22, 2011. Archived from the original on April 15, 2012. Retrieved January 2, 2023.

nytimes.com

odu.edu

cs.odu.edu

semanticscholar.org

api.semanticscholar.org

web.archive.org

  • Hodges, Jim (Fall 2011). "The Dream Chaser: Back to the Future". ASK Magazine. NASA. Archived from the original on 2 December 2013. Retrieved 16 November 2013.
  • "HL-20 model for Personnel Launch System research". NASA. June 22, 2011. Archived from the original on April 15, 2012. Retrieved January 2, 2023.
  • Frank Morring Jr., Sierra Nevada Pushing Ahead with Dream Chaser Archived 2012-11-13 at the Wayback Machine, Aviation Week & Space Technology, 1 October 2012.