HESS J1804-216

[References]

HESS: Aharonian, F. et al., Science, 307, 1938-1942 (2005)
         Aharonian, F. et al., Ap. J. 636, 777-797 (2006)

CANGAROO-III: Higashi, Y. et al., ApJ 683, 957-966 (2008)