http://gigazine.net/index.php?/news/comments/20070409_vector/

http://www.forest.impress.co.jp/article/2006/09/27/vector.html

http://gigazine.net/index.php?/news/comments/20060705_inkscape/

http://www.itmedia.co.jp/news/articles/0604/28/news103.html