BEGIN:VCALENDAR VERSION:2.0 PRODID:-//hacksw/handcal//NONSGML v1.0//EN TZ:+00 BEGIN:VEVENT DTSTART:20120223T000000Z DTEND:20120224T000000Z SUMMARY:Rigidity of periodic and symmetric structures in nature and engineering starts on the 23rd February 2012 LOCATION:Kavli Royal Society International Centre,Newport Pagnell,United Kingdom END:VEVENT END:VCALENDAR