J. Schiefer, B. List, R. Bruckner:
"Process Data Store: A Real-Time Data Store for Monitoring Business Processes";
in: "Proceedings of the 14th International Conference on Database and Expert Systems Applications", herausgegeben von: Vladimir Marik, Werner Retschitzegger, Olga Stepankova; Springer LNCS 2736, 2003, ISBN: 3-540-40806-1, S. 760 - 770.
http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04404396