S. S. Eikenberry, K. Matthews, J. L. Lavine, M. A. Garske i inni. Infrared Observations of the Candidate LBV 1806‐20 and Nearby Cluster Stars. „The Astrophysical Journal”. 616, s. 506, 2004. DOI: 10.1086/422180. arXiv:astro-ph/0404435. Bibcode: 2004ApJ...616..506E. (ang.).
S. S. Eikenberry, K. Matthews, J. L. Lavine, M. A. Garske i inni. Infrared Observations of the Candidate LBV 1806‐20 and Nearby Cluster Stars. „The Astrophysical Journal”. 616, s. 506, 2004. DOI: 10.1086/422180. arXiv:astro-ph/0404435. Bibcode: 2004ApJ...616..506E. (ang.).
S. S. Eikenberry, K. Matthews, J. L. Lavine, M. A. Garske i inni. Infrared Observations of the Candidate LBV 1806‐20 and Nearby Cluster Stars. „The Astrophysical Journal”. 616, s. 506, 2004. DOI: 10.1086/422180. arXiv:astro-ph/0404435. Bibcode: 2004ApJ...616..506E. (ang.).