Basit Shafiq Arjmand Samuel Halima Ghafoor A GTRBAC Based System for Dynamic Workflow Composition and Management. 284-290 2005 conf/isorc/2005 ISORC https://doi.org/10.1109/ISORC.2005.1 https://doi.ieeecomputersociety.org/10.1109/ISORC.2005.1 db/conf/isorc/isorc2005.html#ShafiqSG05