Lijun Shan Hong Zhu CAMLE: A Caste-Centric Agent-Oriented Modelling Language and Environment. 144-161 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3390&spage=144 2004 conf/selmas/2004 SELMAS db/conf/selmas/selmas2004.html#ShanZ04