Messier 89 (Portuguese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Messier 89" in Portuguese language version.

refsWebsite

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1,649^th place

887^th place

978^th place

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18^th place

51^st place

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caltech.edu

«NASA/IPAC Extragalactic Database». Results for NGC 4552. Consultado em 24 de outubro de 2006

Tamura, Naoyuki; Sharples, Ray M.; Arimoto, Nobuo; Onodera, Masato; Ohta, Kouji; Yamada, Yoshihiko (2006). «A Subaru/Suprime-Cam wide-field survey of globular cluster populations around M87 - I. Observation, data analysis and luminosity function». Monthly Notices of the Royal Astronomical Society. 373 (2). 588 páginas. Bibcode:2006MNRAS.373..588T. doi:10.1111/j.1365-2966.2006.11067.x

Tamura, Naoyuki; Sharples, Ray M.; Arimoto, Nobuo; Onodera, Masato; Ohta, Kouji; Yamada, Yoshihiko (2006). «A Subaru/Suprime-Cam wide-field survey of globular cluster populations around M87 - I. Observation, data analysis and luminosity function». Monthly Notices of the Royal Astronomical Society. 373 (2). 588 páginas. Bibcode:2006MNRAS.373..588T. doi:10.1111/j.1365-2966.2006.11067.x

Hartmut Frommert e Christine Kronberg (21 de agosto de 2007). «Messier Object 89» (em inglês). SEDS. Consultado em 29 de maio de 2012