Stefanos Souldatos Xiaoying Wu Dimitri Theodoratos Theodore Dalamagas Timos K. Sellis Evaluation of partial path queries on xml data. 21-30 2007 conf/cikm/2007 CIKM http://doi.acm.org/10.1145/1321440.1321446 db/conf/cikm/cikm2007.html#SouldatosWTDS07