Satoshi Morimoto Satoshi Sakai Masaki Gotou Heeryon Cho Toru Ishida Yohei Murakami Building Blocks: Layered Components Approach for Accumulating High-Demand Web Services. 430-433 2009 Web Intelligence http://dx.doi.org/10.1109/WI-IAT.2009.74 conf/webi/2009 db/conf/webi/webi2009.html#MorimotoSGCIM09