Zhiwei Xu Wei Li 0008 Hongguang Fu Zhenbing Zeng The Vega Grid and Grid-Based Education. 228-240 2002 conf/icwl/2002 ICWL http://dx.doi.org/10.1007/3-540-45689-9_19 db/conf/icwl/icwl2002.html#XuLFZ02