T. Eiter, M. Fink, G. Sabbatini, H. Tompits:
" Declarative Update Policies for Nonmonotonic Knowledge Bases";
in: "Logics for Emerging Applications of Databases", J. Chomicki et al. (ed.); Springer, 2003, (invited), ISBN: 3-540-00705-9, 85 - 129.
http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04404573