Kouji Aoyama Takanori Ugai Jun Arima Design and Evaluation a Knowledge Management System by Using Mathematical Model of Knowledge Transfer. 1253-1260 2007 conf/kes/2007-2 KES (2) http://dx.doi.org/10.1007/978-3-540-74827-4_156 db/conf/kes/kes2007-2.html#AoyamaUA07