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when toggle format what by license comment
Jun 29, 2011 at 22:33 history edited Torsten Ekedahl CC BY-SA 3.0
Added proof of statement
Jun 29, 2011 at 21:19 comment added Hugo Chapdelaine Do you have a reference for this result?
Jun 29, 2011 at 4:18 history answered Torsten Ekedahl CC BY-SA 3.0