Masahiro Fujita Gabriel Costa Rika Hasegawa Tsuyoshi Takagi Jun Yokono Hideki Shimomura Architecture and preliminary experimental results for emotionally grounded symbol acquisition. 35-36 2001 Agents http://portal.acm.org/citation.cfm?id=375735.375851 db/conf/agents/agents2001.html#FujitaCHTYS01