BEGIN:VCALENDAR VERSION:2.0 PRODID:-//hacksw/handcal//NONSGML v1.0//EN TZ:+00 BEGIN:VEVENT DTSTART:20200424T000000Z DTEND:20200424T000000Z SUMMARY:META 2020, the 11th International Conference on Metamaterials, Photonic Crystals and Plasmonics: Early bird registration deadline due before 24th April 2020 LOCATION:University of Warsaw,Warsaw,Poland END:VEVENT END:VCALENDAR