<ref>{{cite book|last1=Schaller|first1=Thomas|title=Organisationsverwaltung in CSCW-Systemen|date=1998|publisher=Bamberg University|___location=Bamberg}}</ref>
<ref>{{cite book|last1=Lawall, Schaller, Reichelt|title=Enterprise Architecture: A Formalism for Modelling Organizational Structures in Information Systems|date=2014|publisher=Enterprise and Organizatinal Modeling and Simulation: 10th International Workshop CAiSE2014|___location=Thessaloniki}}</ref>
