“Polycardiosignals Coherence Evaluation Results for Patients with Cardiopulmonary Diseases”, ELEKTRON ELEKTROTECH, vol. 77, no. 5, pp. 41–44, May 2007, Accessed: Dec. 05, 2025. [Online]. Available: https://eejournal.ktu.lt/index.php/elt/article/view/10737