Theoretical problems Experimental problems EuPhO2020_Theory__Arabic EuPhO2020_Theory__Arabic_Syria EuPhO2020_Theory__Bosnian EuPhO2020_Theory__Bulgarian EuPhO2020_Theory__Chinese EuPhO2020_Theory__Dutch EuPhO2020_Theory__Estonian EuPhO2020_Theory__Farsi EuPhO2020_Theory__French EuPhO2020_Theory__Finnish EuPhO2020_Theory__GBR_ EuPhO2020_Theory__Georgian EuPhO2020_Theory__German EuPhO2020_Theory__Icelandic EuPhO2020_Theory__Indonesian EuPhO2020_Theory__Israeli EuPhO2020_Theory__Japanese EuPhO2020_Theory__Korean EuPhO2020_Theory__Latvian EuPhO2020_Theory__Macedonian EuPhO2020_Theory__Polish EuPhO2020_Theory__Portugese EuPhO2020_Theory__Romanian EuPhO2020_Theory__Russian EuPhO2020_Theory__Slovak EuPhO2020_Theory__Serbian EuPhO2020_Theory__Slovenian EuPhO2020_Theory__Spanish EuPhO2020_Theory__Swedish EuPhO2020_Theory__Thai EuPhO2020_Theory__Turkish Theory solutions EuPhO2020_Theory_Solutions_Japanese EuPhO2020_Experiment__Arabic EuPhO2020_Experiment__Arabic_Syria EuPhO2020_Experiment__Bosnian EuPhO2020_Theory__Bulgarian EuPhO2020_experiment__Chinese EuPhO2020_Experiment__Dutch EuPhO2020_Experiment__Estonian EuPhO2020_Experiment__Farsi EuPhO20_experiment__French EuPhO2020_Experiment__Finnish EuPhO2020_experiment__GBR_ EuPhO2020_Experiment__Georgian EuPhO2020_experiment__German EuPhO2020_Experiment__Icelandic EuPhO2020_Experiment__Indonesian EuPhO2020_Experiment__Israeli EuPhO2020_Experiment__Japanese EuPhO2020_Experiment__Korean EuPhO2020_Experiment__Latvian EuPhO2020_Experiment__Macedonian EuPhO2020_Experiment__Polish EuPhO2020_Experiment__Portugese EuPhO2020_Experiment__Romanian EuPhO2020_Experiment__Russian EuPho2020_Experiment__Slovak EuPhO2020_Experiment__Serbian EuPhO20_experiment__Slovenian EuPhO2020_experiment__Spanish EuPhO2020_Experiment__Swedish EuPhO2020_Experiment__Thai EuPhO2020_Experiment__Turkish Experiment solutions EuPhO2020_Experiment_Solutions_Japanese