Pablo Cesar; Dick Bulterman; Petri Vuorimaa. <a href="http://www.w3.org/TR/2008/WD-timesheets-20080110"><cite>SMIL Timesheets 1.0.</cite></a> 10 January 2008. W3C Working Draft. (Work in progress.) URL: <a href="http://www.w3.org/TR/2008/WD-timesheets-20080110">http://www.w3.org/TR/2008/WD-timesheets-20080110</a>