Cost Management of Business Processes. - August-Wilhelm Scheer; Carsten Berkau; Petra Hirschmann (GI Jahrestagung, 1994)

Management of intercompany business processes. - Petra Hirschmann; Ingo Heimig; August-Wilhelm Scheer (ECIS, 1995)

Betriebsübergreifendes Geschäftsprozessmanagement. - Petra Hirschmann (GI Jahrestagung, 1995)

Architecture of A Co-operation Exchange for the Continuous Design of Virtual Enterprises. - Petra Hirschmann; August-Wilhelm Scheer (ECIS, 1997)