BEGIN:VCALENDAR
BEGIN:VEVENT
SUMMARY:PhD defence Erik Jan van Leeuwen
DTSTART:20090616T070000Z
DTEND:20090616T080000Z
UID:d802e203-4663-42f1-af5a-57e771667ae3
DESCRIPTION:PhD thesis: Optimization and Approximation on Systems of Geome
 tric Objects
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END:VCALENDAR