ŠLIUPAITĖ, A.; NAVICKAS, Z.; VAINORAS, A. Evaluation of Complexity of ECG Parameters Using Sample Entropy and Hankel Matrix. Elektronika ir Elektrotechnika, [S. l.], v. 92, n. 4, p. 107-110, 2009. Disponível em: https://eejournal.ktu.lt/index.php/elt/article/view/10263. Acesso em: 6 oct. 2022.