• First European physics olympiad - short and challenging problemsHeidelberg, Mihkel; Vigh, Mate; Kalda, JaanEuropean journal of physics2018 / 16 p.: ill https://doi.org/10.1088/1361-6404/aab59f https://www.scopus.com/sourceid/27536 https://www.scopus.com/record/display.uri?eid=2-s2.0-85055639928&origin=inward&txGid=4df35ad9c8638360b1ca36cd6c94e091 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=EUR%20J%20PHYS&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000444647600002