1. Andrews, Tony; Curbera, Francisco; Dholakia, Hitesh; Goland, Yaron; Klein, Johannes; Leymann, Frank; Liu, Kevin; Roller, Dieter; Smith, Doug; Thatte, Satish; Trickovic, Ivana; Weerawarana, Sanjiva: Business Process Execution Language for Webservices. Version 1.1, 05.05.2003. http://www.ibm.com/developerworks/library/ws-bpel , Abruf am 2004-10-26.
2. Alonso, Gustavo; Casati, Fabio; Kuno, Harumi; Machiraju; Vijay: Web Services. Concepts, Architectures and Applications. Springer, Berlin 2003.
3. Alonso, Gustavo: Myths around Webservices. In: Bulletin of the Technical Committee on Data Engineering 25 (2002) 4, S. 3–9.
4. ATIS Committee. Accountability. http://www.atis.org/tg2k/_accountability.html, Abruf am 2004-11-10.
5. Becker, Jörg; Kahn, Dieter: The Process in Focus: In: Becker, Jörg; Kugeler, Martin; Rosemann, Michael (Hrsg.): Process Management. A Guide for the Design of Business Processes. Springer, Berlin u. a. 2003, S. 1–12.