Sun, 16 Jun 2013 20:42:07 -0400 Christian Urban updated the paper for submission
Thu, 13 Jun 2013 22:53:49 +0800 chunhan add paper pdf
Thu, 13 Jun 2013 22:51:03 +0800 chunhan fixed typos
Thu, 13 Jun 2013 22:15:32 +0800 chunhan merge
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