Nikos Bikakis Nektarios Gioldasis Chrisa Tsinaraki Stavros Christodoulakis Semantic Based Access over XML Data. 259-267 2009 WSKS (1) http://dx.doi.org/10.1007/978-3-642-04754-1_27 conf/wsks/2009-1 db/conf/wsks/wsks2009-1.html#BikakisGTC09