Fabio Y. Okuyama Rafael H. Bordini Antônio Carlos da Rocha Costa A Distributed Normative Infrastructure for Situated Multi-agent Organisations. 29-46 2008 DALT http://dx.doi.org/10.1007/978-3-540-93920-7_3 conf/dalt/2008 db/conf/dalt/dalt2008.html#OkuyamaBC08