[1] KeygenPqgAttribute - doctype - The keygen pqg attribute - Project Hosting on Google Code (2010-03-20 19:54:52 +09:00 版) <http://code.google.com/p/doctype/wiki/KeygenPqgAttribute>

[2] keygen - MDC (2010-03-20 19:55:15 +09:00 版) <https://developer.mozilla.org/En/HTML/Element/keygen>