Wataru Sunayama Yuji Nomura Yukio Ohsawa Masahiko Yachida Support system for user interests expression on searching web pages. 14-22 2001 32 Systems and Computers in Japan 13 http://dx.doi.org/10.1002/scj.1081 db/journals/scjapan/scjapan32.html#SunayamaNOY01