[1] [CITE@en[Pointer Events]]
( ([TIME[2012-12-10 08:53:53 +09:00]] 版))
<http://www.w3.org/TR/2012/WD-pointerevents-20121211/>

[2] [CITE@en[Pointer Events]]
( ([TIME[2013-01-14 22:32:18 +09:00]] 版))
<http://www.w3.org/TR/2013/WD-pointerevents-20130115/>