VOZDA, M.; PETEREK, T.; HRVOLOVA, B.; PENHAKER, M. Unit for Recording External Events during Measuring of Biosignals. Elektronika ir Elektrotechnika, [S. l.], v. 20, n. 1, p. 37–40, 2014. DOI: 10.5755/j01.eee.20.1.6164. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/6164.. Acesso em: 8 feb. 2026.