Alberto Greco Thomas Riga Angelo Cangelosi The Acquisition of New Categories through Grounded Symbols: An Extended Connectionist Model. 763-770 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2714&spage=763 2003 conf/icann/2003 ICANN db/conf/icann/icann2003.html#GrecoRC03