A Federated Digital Identity Management Approach for Business Processes. - Elisa Bertino; Rodolfo Ferrini; Andrea Musci; Federica Paci; Kevin J. Steuer (CollaborateCom, 2008)

An Interoperable Approach to Multifactor Identity Verification. - Federica Paci; Rodolfo Ferrini; Andrea Musci; Kevin Steuer Jr.; Elisa Bertino (Computer, 2009)