Two years of successful operations of the coded-mask telescope SIGMA for hard X-ray and soft γ-ray astronomy
2004 ◽
Vol 33
(4)
◽
pp. 601-604
◽
2004 ◽
Vol 48
(1-4)
◽
pp. 269-273
◽
2009 ◽
Vol 610
(2)
◽
pp. 515-521
◽