Puga, E., A. Marín-Franch, F. Najarro, A. Lenorzer, A. Herrero, J. A. Acosta Pulido, L. A. Chavarrí­a, A. Bik, D. Figer and S. Ramí­rez Alegría: Near-infrared spectroscopy in NGC 7538. In: Astronomy and Astrophysics 517, (2010).
url: http://adsabs.harvard.edu/abs/2010A%26A...517A...2P
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