GAVRIJASEVA, A.; MARTENS, O.; LAND, R. Acoustic Spectrum Analysis of Genuine and Counterfeit Euro Coins. Elektronika ir Elektrotechnika, [S. l.], v. 21, n. 3, p. 59-57, 2015. DOI: 10.5755/j01.eee.21.3.10384. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/10384. Acesso em: 7 oct. 2022.