METSHEIN, M.; PARVE, T.; ANNUS, P.; RIST, M.; MIN, M. Realization and Evaluation of the Device for Measuring the Impedance of Human Body for Detecting the Respiratory and Heart Rate. Elektronika ir Elektrotechnika, [S. l.], v. 23, n. 3, p. 36-42, 2017. DOI: 10.5755/j01.eie.23.3.18330. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/18330. Acesso em: 26 jul. 2021.