sopo2011 http://www.scirp.org/conf/sopo2011 SOPO2011 Thu, 07 Jul 2011 14:42:18 GMT en 30 sopo2011 SOPO 2011 Papers Have Been Indexed by Ei Compendex http://www.scirp.org/conf/sopo2011 sopo2011 Organizing Committee http://www.scirp.org/conf/sopo2011 2011-07-07 02:42:18