The advantages of web service orchestration in perspective. - Jeffrey Gortmaker; Marijn Janssen; René W. Wagenaar (ICEC, 2004)

Accountability of Electronic Cross-Agency Service-Delivery Processes. - Jeffrey Gortmaker; Marijn Janssen; René W. Wagenaar (EGOV, 2005)

Towards Requirements for a Reference Model for Process Orchestration in e-Government. - Jeffrey Gortmaker; Marijn Janssen; René W. Wagenaar (TCGOV, 2005)

Web Service Orchestration in Public Administration: Challenges, Roles, and Growth Stages. - Marijn Janssen; Jeffrey Gortmaker; René W. Wagenaar (Inf. Syst. Manag., 2006)