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"Bruno Luong" <b.luong@fogale.findmycountry> wrote in message]]> Dec 30, 2012 4:19:10 PM Dec 30, 2012 4:19:10 PM dora.zhuyi@gmail.com 0 http://mathforum.org/kb/thread.jspa?messageID=7944861&tstart=0#7944861 Also you do not need to create the]]> Dec 29, 2012 3:55:10 AM Dec 29, 2012 3:55:10 AM b.luong@fogale.findmycountry 1 http://mathforum.org/kb/thread.jspa?messageID=7944735&tstart=0#7944735 Dec 28, 2012 6:27:09 PM Dec 28, 2012 6:27:09 PM dora.zhuyi@gmail.com 2