Simultaneous Multi-Wavelength Observations of Sgr A* During 2007 April 1-11DOI: info:10.1088/0004-637X/706/1/348v. 706348–375
Yusef-Zadeh, F., Bushouse, H., Wardle, M., Heinke, C., Roberts, D. A., Dowell, C. D., Brunthaler, A., Reid, Mark J., Martin, C. L., Marrone, D. P., Porquet, D., Grosso, N., Dodds-Eden, K., Bower, G. C., Wiesemeyer, H., Miyazaki, A., Pal, S., Gillessen, S., Goldwurm, A., Trap, G., and Maness, H. 2009. "Simultaneous Multi-Wavelength Observations of Sgr A* During 2007 April 1-11." The Astrophysical Journal, 706 348–375. https://doi.org/10.1088/0004-637X/706/1/348.