Xiaoshuang Xu Yucai Feng Feng Wang Yingbiao Zhou Rewriting XPath Expressions Depending on Path Summary. 736-744 2009 ADMA http://dx.doi.org/10.1007/978-3-642-03348-3_78 conf/adma/2009 db/conf/adma/adma2009.html#XuFWZ09