1. Ang, J.: A Comprehensive Office Modeling Framework for ITHACA. ITHACA, Bull, 89, D9, #1, Version 0, June 1989.
2. Chrapary, H.-J., Rosenow-Schreiner, E., Waldhör, K.: Das Elektronische Organisationshandbuch. Preprint. TA Triumph-Adler AG, 1989.
3. Faidt, K., Grünberger, H., Heller, H., Hinkelmann, K., Karagiannis, D., Salzmann, W., Schebiella, S.: Organisation Support System -OSSY-. Der Demonstrator, Projektbericht. FAW Ulm, February 1990.
4. Ishii, H., Kubota, K.: Office Procedure Knowledge Base for Organizational Office Work Support. In: Office Information Systems: The Design Process. Working Conference, IFIP WG 8.4, August 15–17,1988, Linz, Austria, p. 40–57.
5. Karbe, B., Ramsperger, N.: Electronic Circulation Folders — Functionality and Implementation. Preprint from: Office Automation, Athens, October 1989.