François Bry Fatih Coskun Serap Durmaz Tim Furche Dan Olteanu Markus Spannagel The XML Stream Query Processor SPEX. 1120-1121 2005 conf/icde/2005 ICDE http://csdl.computer.org/comp/proceedings/icde/2005/2285/00/22851120.pdf db/conf/icde/icde2005.html#BryCDFOS05