NGC 4884 (Belarusian Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 4884" in Belarusian language version.

refsWebsite

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doi.org

McConnell, N.J.; et al. (2011). "Two ten-billion-solar-mass black holes at the centres of giant elliptical galaxies" (PDF). Nature. 480 (8 Dec): 215–218. doi:10.1038/nature10636.

lenta.ru

Lenta.ru. Астрофизики обнаружабо пару чёрных дыр-тяжеловесов. 6.12.2011

nature.com

McConnell, N.J.; et al. (2011). "Two ten-billion-solar-mass black holes at the centres of giant elliptical galaxies" (PDF). Nature. 480 (8 Dec): 215–218. doi:10.1038/nature10636.