Parent Directory| Name | Size | Last Modified |
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| 0001193125-11-236582-index.html | 2011-08-30 16:07:05 | |
| 0001193125-11-236582.txt | 2011-08-30 16:07:05 | |
 0001193125-11-236582-xbrl.zip | 46893 | 2011-08-30 16:07:05 |
| cers-20110630.xml | 364531 | 2011-08-30 16:07:05 |
| cers-20110630.xsd | 11110 | 2011-08-30 16:07:05 |
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| d10qa.htm | 49483 | 2011-08-30 16:07:05 |
| dex1042.htm | 124471 | 2011-08-30 16:07:05 |
| dex313.htm | 3021 | 2011-08-30 16:07:05 |
| dex314.htm | 2930 | 2011-08-30 16:07:05 |
| FilingSummary.xml | 9839 | 2011-08-30 16:07:05 |
| Financial_Report.xls | 319488 | 2011-08-30 16:07:05 |
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| R10.htm | 24602 | 2011-08-30 16:07:05 |
| R11.htm | 12232 | 2011-08-30 16:07:05 |
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| R13.htm | 26477 | 2011-08-30 16:07:05 |
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| R15.htm | 31175 | 2011-08-30 16:07:05 |
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| R18.htm | 22506 | 2011-08-30 16:07:05 |
| R2.htm | 124154 | 2011-08-30 16:07:05 |
| R3.htm | 5895 | 2011-08-30 16:07:05 |
| R4.htm | 89640 | 2011-08-30 16:07:05 |
| R5.htm | 108345 | 2011-08-30 16:07:05 |
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| R7.htm | 54521 | 2011-08-30 16:07:05 |
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| R9.htm | 12093 | 2011-08-30 16:07:05 |
| report.css | 2721 | 2011-08-30 16:07:05 |
| Show.js | 6423 | 2011-08-30 16:07:05 |