Smidtaite, R., Z. Navickas, A. Vainoras, L. Bikulciene, and V. Poškaitis. 2009. “Evaluation of Coherence of T Wave in Different Leads”. Elektronika Ir Elektrotechnika 93 (5):113-16. https://eejournal.ktu.lt/index.php/elt/article/view/10195.