[1] [CITE@en[Messaging API]]
( ([TIME[2013-05-15 23:48:51 +09:00]] 版))
<http://www.w3.org/TR/2013/WD-messaging-20130516/>

[2] [CITE@en[The Messaging API]]
( ([TIME[2014-01-10 22:23:10 +09:00]] 版))
<http://www.w3.org/TR/2014/NOTE-messaging-api-20140114/>