NGC 4755 (Russian Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 4755" in Russian language version.

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google.com.au

books.google.com.au

  • Kaler, James B. Stars and their spectra: an introduction to the spectral sequence. — University of Cambridge, 1989. — С. 13. — ISBN 052130494.
  • O'Meara, Stephen James. The Caldwell objects. — Cambridge, USA: Sky Publishing Corporation, 2002. — С. 378. — ISBN 0-933346-97-2.

harvard.edu

adsabs.harvard.edu

mac.com

homepage.mac.com

nasa.gov

apod.nasa.gov

web.archive.org

webcitation.org