Dao Dinh Kha Masatoshi Yoshikawa Shunsuke Uemura Application of rUID in Processing XML Queries on Structure and Keyword. 279-289 2002 conf/dexa/2002 DEXA http://link.springer.de/link/service/series/0558/bibs/2453/24530279.htm db/conf/dexa/dexa2002.html#KhaYU02