Timothy Freeman Katarzyna Keahey Ian T. Foster A. Rana Borja Sotomayor Frank Würthwein Division of Labor: Tools for Growing and Scaling Grids. 40-51 2006 conf/icsoc/2006 ICSOC http://dx.doi.org/10.1007/11948148_4 db/conf/icsoc/icsoc2006.html#FreemanKFRSW06