IBWAP 202321st International Balkan Workshop on Applied Physics and Materials Science, July 11-14 2023, Constanta, RomaniaIBWAP 2022International Balkan Workshop on Applied Physics and Materials ScienceIBWAP 202020th International Balkan Workshop on Applied Physics and Materials ScienceIBWAP 201919th International Balkan Workshop on Applied Physics and Materials Science, Romania (July 16-19, 2019 Constanta) ISCBPU 4Bodrum, Turkey (29 August – 1 September, 2006)ISCBPU 3Cluj-Napoca, Romania (1997)ISCBPU 2Bansko, Bulgaria (1996)ISCBPU 1Izmir, Turkey (1994)