[1] SMIL Timesheets 1.0 ( (2012-03-29 03:27:58 +09:00 版)) <http://www.w3.org/TR/2012/NOTE-timesheets-20120328/>
the Timesheets 1.0 standalone Working Draft now in Last Call since 10 January 2008. It was published as a Timesheets 1.0 Working Group NOTE on 28 March 2012 on closure of the SYMM WG.
[3] SMIL Timesheets 1.0 (2012-03-28 17:43:44 +09:00) <https://www.w3.org/TR/2008/WD-timesheets-20080110/>