Antonio Congiusta Carlo Mastroianni Andrea Pugliese Domenico Talia Paolo Trunfio Enabling Knowledge Discovery Services on Grids. 250-259 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3165&spage=250 2004 conf/eagc/2004 European Across Grids Conference db/conf/eagc/eagc2004.html#CongiustaMPTT04