• Radiofrequency electromagnetic fields from mobile devices used for learning and workingKoppel, Tarmo; Ahonen, MikkoElektronika ir elektrotechnika = Electronics and electrical engineering2013 / p. 65-70 : ill https://doi.org/10.5755/j01.eee.19.6.4565 https://www.scopus.com/sourceid/19900193212 https://www.scopus.com/record/display.uri?eid=2-s2.0-84879300209&origin=resultslist&sort=plf-f&src=s&sot=b&sdt=b&s=DOI%2810.5755%2Fj01.eee.19.6.4565%29&sessionSearchId=b54b8b263198aa2b467a2e833e85bb3b https://jcr.clarivate.com/jcr-jp/journal-profile?journal=ELEKTRON%20ELEKTROTECH&year=2013 https://www.webofscience.com/wos/woscc/full-record/WOS:000320830400013