Jacques Calmet Anusch Daemi Regine Endsuleit Thilo Mie A Liberal Approach to Openness in Societies of Agents.. 81-92 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3071&spage=81 2003 conf/esaw/2003 ESAW db/conf/esaw/esaw2003.html#CalmetDEM03