− | References: [https://web.archive.org/web/20101127234410/http://www.pentrace.net/article112900028.html] | + | References: [https://web.archive.org/web/20101127234410/http://www.pentrace.net/article112900028.html], [https://forum.fountainpen.it/viewtopic.php?f=8&t=26297] |