Xiaoyong Du Wenfei Fan Jianmin Wang 0001 Zhiyong Peng Mohamed A. Sharaf Web Technologies and Applications - 13th Asia-Pacific Web Conference, APWeb 2011, Beijing, China, April 18-20, 2011. Proceedings 6612 2011 http://dx.doi.org/10.1007/978-3-642-20291-9 978-3-642-20290-2 APWeb Lecture Notes in Computer Science Springer db/conf/apweb/apweb2011.html