1
出版事項: c2001.
Superior document: WBI development studies
2
出版事項: c2005.
Superior document: WBI development studies
3
出版事項: 2007.
4
出版事項: c2008.
Superior document: WBI development studies
Links: 全文の入手
5
出版事項: c2008.
Superior document: WBI development studies
Links: 全文の入手