蝴蝶星雲 (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "蝴蝶星雲" in Chinese language version.

refsWebsite

Global rank Chinese rank

75^th place

140^th place

1,342^nd place

855^th place

18^th place

57^th place

harvard.edu

adsabs.harvard.edu

（Schwarz 等人 1997） Schwarz, H. E.; Aspin; Corradi; Reipurth, M 2-9: moving dust in a fast bipolar outflow, Astronomy and Astrophysics 319, 1997, 319: 267–273

nasa.gov

antwrp.gsfc.nasa.gov

（APoD 2005） APoD, Astronomy Picture of the Day, NASA and Michigan Technological University (MTU), 2005
（APoD 2007） APoD, Astronomy Picture of the Day, NASA and Michigan Technological University (MTU), 2007

u-strasbg.fr

simbad.u-strasbg.fr

（SIMBAD 2006） SIMBAD, Results for PN M 2-9, SIMBAD, Centre de Données Astronomiques de Strasbourg, 2006