http://services.igi-global.com/resolvedoi/resolve.aspx?doi=10.4018/978-1-4666-4707-7.ch058
http://services.igi-global.com/resolvedoi/resolve.aspx?doi=10.4018/978-1-4666-3685-9.ch010
http://joi.jlc.jst.go.jp/JST.JSTAGE/transinf/E92.D.799?from=CrossRef