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0001266454-06-000413-index-headers.html | 2006-09-21 16:16:38 | |
0001266454-06-000413-index.html | 2006-09-21 16:16:38 | |
0001266454-06-000413.txt | 2006-09-21 16:16:38 | |
sigma_8k-092106.htm | 31347 | 2006-09-21 16:16:38 |
sigma_8k-ex9901.htm | 11836 | 2006-09-21 16:16:38 |