Beratungsdialog im WWW: Ein konversationales Modell und seine Implementierung. - Hagen Engelmann; Marcello L'Abbate; Ulrich Thiel (ISI, 2004)

Approach for an integrated interoperable system architecture for disaster management systems. - Christian Paulus; Stefan Möllmann; Hagen Engelmann (ISCRAM, 2010)

Key performance indicator based calculations as a decision support for the tactical level. - Stefan Möllmann; David Braun; Hagen Engelmann; Wolfgang Raskob (ISCRAM, 2011)