BEGIN:VCALENDAR VERSION:2.0 PRODID:https://www.nabaltec.de/ BEGIN:VEVENT UID:event170920256987082fb82278.68172931 DTSTART:20250916T220000Z DTEND:20250918T215959Z SUMMARY:ICR (Intern. Colloquium on Refractories) END:VEVENT END:VCALENDAR