Andreia Malucelli Henrique Lopes Cardoso Eugénio C. Oliveira Enriching a MAS Environment with Institutional Services. 105-120 2005 conf/e4mas/2005 E4MAS http://dx.doi.org/10.1007/11678809_7 db/conf/e4mas/e4mas2005.html#MalucelliCO05