Satoshi Watanabe Takayuki Ito Tadachika Ozono Toramatsu Shintani A Paper Recommendation Mechanism for the Research Support System Papits. 71-80 2005 conf/deec/2005 DEEC http://doi.ieeecomputersociety.org/10.1109/DEEC.2005.3 db/conf/deec/deec2005.html#WatanabeIOS05