http://www.excampus.org/
http://itpro.nikkeibp.co.jp/free/NOS/NEWS/20030221/2/
http://slashdot.jp/article.pl?sid=03/02/23/0424245&topic=27&mode=nested
http://www.zdnet.co.jp/enterprise/0302/21/epn13.html
http://www.et.soft.iwate-pu.ac.jp/~ocet/index.php?menu=data/know/excampus_haikei.ocet