REFEROWSKI, L.; SWISULSKI, D. Progress in Education of Electrical Measurements. Elektronika ir Elektrotechnika, [S. l.], v. 67, n. 3, p. 25–30, 2006. DOI: 10.5755/j02.eie.10627. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/10627.. Acesso em: 10 may. 2026.