Costin Badica Maria Ganzha Marcin Paprzycki Amalia Pirvanescu Combining Rule-Based and Plug-in Components in Agents for Flexible Dynamic Negotiations. 555-558 2005 conf/ceemas/2005 CEEMAS http://dx.doi.org/10.1007/11559221_59 db/conf/ceemas/ceemas2005.html#BadicaGPP05