Marcin Maleszka Bernadetta Mianowska Ngoc Thanh Nguyen Agent Technology for Information Retrieval in Internet. 151-162 2009 KES-AMSTA http://dx.doi.org/10.1007/978-3-642-01665-3_16 conf/kesamsta/2009 db/conf/kesamsta/kesamsta2009.html#MaleszkaMN09