Lei Li Qiaoling Liu Yunfeng Tao Lei Zhang Jian Zhou Yong Yu Providing an Uncertainty Reasoning Service for Semantic Web Application. 628-639 2006 conf/apweb/2006 APWeb http://dx.doi.org/10.1007/11610113_55 db/conf/apweb/apweb2006.html#LiLTZZY06