NGC 4993 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 4993" in English language version.

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arxiv.org

caltech.edu

nedipac.caltech.edu

cseligman.com

docdb.net

  • "NGC 4993". Deep Sky Observer's Companion. Retrieved 28 August 2017.

doi.org

dso-browser.com

handle.net

hdl.handle.net

harvard.edu

ui.adsabs.harvard.edu

mercurynews.com

nasa.gov

nasa.gov

  • Chou, Felicia; Washington, Dewayne; Porter, Molly (16 October 2017). "Release 17-083 - NASA Missions Catch First Light from a Gravitational-Wave Event". NASA. Retrieved 21 October 2017.

jpl.nasa.gov

gcn.gsfc.nasa.gov

nationalgeographic.com

news.nationalgeographic.com

nature.com

nih.gov

pubmed.ncbi.nlm.nih.gov

nytimes.com

psu.edu

citeseerx.ist.psu.edu

science.org

sciencemag.org

vis.sciencemag.org

semanticscholar.org

api.semanticscholar.org

web.archive.org

wired.com