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: 5 dec. 2025.