Henryka Jormakka Toni Jussila Kirsi Valtari Agents Based Implementation of Personalised News Delivery Service. 257-269 http://link.springer.de/link/service/series/0558/bibs/1931/19310257.htm 2000 conf/mata/2000 MATA db/conf/mata/mata2000.html#JormakkaJV00