Trap, G., Goldwurm, A., Dodds-Eden, K., Weiss, A., Terrier, R., Ponti, G., et al. (2011). Concurrent X-ray, near-infrared, sub-millimeter, and GeV gamma-ray observations of Sagittarius A. Astronomy & Astrophysics, 528: A140, pp. 1-13. doi:10.1051/0004-6361/201015157.