Jianbo Shen Bin Gong Yi Hu Sha Li The Design and Implementation of a GMA based Grid Monitoring Service. 588-593 2007 CSCWD http://dx.doi.org/10.1109/CSCWD.2007.4281502 conf/cscwd/2007 db/conf/cscwd/cscwd2007.html#ShenGHL07