Extending The BFA Workflow Authorization Model to Express Weighted Voting. - Savith Kandala; Ravi S. Sandhu (DBSec, 1999)

Secure Role-Based Workflow Models. - Savith Kandala; Ravi S. Sandhu (DBSec, 2001)

An Attribute Based Framework for Risk-Adaptive Access Control Models. - Savith Kandala; Ravi S. Sandhu; Venkata Bhamidipati (ARES, 2011)