1. Hierarchical Role-Based Access Control for Multi-User Collaborative CAD Environment. Issue 3 (3rd May 2016) Authors: Teng, Chia-Chi; Mensah, Francis N.; Ekstrom, J.; Helps, Richard; Jensen, C. Greg Journal: Computer-aided design and applications Issue: Volume 13:Issue 3(2016) Page Start: 397 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗