A. Tjoa, B. List, J. Schiefer, G. Quirchmayr:
"The Process Warehouse: a Data Warehouse Approach for Business Process Management";
in: "Intelligent Management in the Knowledge Economy", Edward Elgar Publishing, Bodmin, Cornwall, 2003, ISBN: 1-84376-471-7, 112 - 126.
http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04968615