Enterprise Coherence Assessment Version. - Roel Wagter; Erik Proper; Dirk Witte (PRET, 2011)

Enterprise Coherence in the Dutch Ministry of Social Affairs and Employment. - Roel Wagter; Henderik Alex Proper; Dirk Witte (CAiSE Workshops, 2012)

A Practice-Based Framework for Enterprise Coherence. - Roel Wagter; Erik Proper; Dirk Witte (PRET, 2012)

The Extended Enterprise Coherence-Governance Assessment. - Roel Wagter; Henderik Alex Proper; Dirk Witte (TEAR/PRET, 2012)

Enterprise Architecture: A Strategic Specialism. - Roel Wagter; Henderik Alex Proper; Dirk Witte (CEC, 2012)

On the Use of GEA at the Dutch Ministry of Social Affairs and Employment. - Roel Wagter; Henderik Alex Proper; Dirk Witte (CEC, 2012)

Developing the GEA Method - Design Science and Case-Study Research in Action. - Roel Wagter; Henderik Alex Proper; Dirk Witte (CAiSE Workshops, 2013)

Enterprise Coherence Governance in the Public Sector - Custodial Institutions Agency of the Dutch Ministry of Security and Justice. - Roel Wagter; Henderik Alex Proper; Dirk Witte (CBI, 2013)