[1] plain2 fan (japanese) (2015-02-16 13:10:24 +09:00 版) http://web.archive.org/web/20060214041744/http://shika.aist-nara.ac.jp/products/plain2/plain2-j.html

[2] plain2 の利用 (2015-02-16 13:10:56 +09:00 版) http://web.archive.org/web/20051103135630/http://shika.aist-nara.ac.jp/products/plain2/plain2-more.html

[3] plain2 -README- (2015-02-16 13:11:58 +09:00 ���) http://web.archive.org/web/20051103141043/http://shika.aist-nara.ac.jp/products/plain2/jpn/plain2-readme2.jpn.html