EWS-A Case Study on Access Control in Workflow Systems. - Åsa Hagström; Viiveke Fåk; Mark Vandenwauver (WETICE, 2000)

Revocations-A Classification. - Åsa Hagström; Sushil Jajodia; Francesco Parisi-Presicce; Duminda Wijesekera (CSFW, 2001)

Removing permissions in the flexible authorization framework. - Duminda Wijesekera; Sushil Jajodia; Francesco Parisi-Presicce; Åsa Hagström (ACM Trans. Database Syst., 2003)

A Model for Distribution and Revocation of Certificates. - Åsa Hagström; Francesco Parisi-Presicce (ICGT, 2010)